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100 results found for "variable-matching" in Class 10.

एक चर के बहुपद में चर की घातें कैसी होनी चाहिए?

What should the powers of the variable be in a polynomial in one variable?

Explanation opens after your attempt
Correct Answer

C. अऋणात्मक पूर्णांकNon-negative integers

Step 1

Concept

In a polynomial, powers of the variable are non-negative integers like \(0,1,2,\ldots\). This is the basic identification rule.

Step 2

Why this answer is correct

The correct answer is C. अऋणात्मक पूर्णांक / Non-negative integers. In a polynomial, powers of the variable are non-negative integers like \(0,1,2,\ldots\). This is the basic identification rule.

Step 3

Exam Tip

बहुपद में चर की घातें \(0,1,2,\ldots\) जैसी अऋणात्मक पूर्णांक होती हैं। यही बहुपद की मूल पहचान है।

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बहुपद (p(u)=13u-3-2u+9) में चर कौन सा है?

What is the variable in the polynomial (p(u)=13u-3-2u+9)?

Explanation opens after your attempt
Correct Answer

B. (u)

Step 1

Concept

The letter whose values can change is the variable. Here the variable is (u).

Step 2

Why this answer is correct

The correct answer is B. (u). The letter whose values can change is the variable. Here the variable is (u).

Step 3

Exam Tip

जिस अक्षर के मान बदल सकते हैं वह चर होता है। यहां चर (u) है।

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बहुपद (p(t)=6t-2-7t+3) में चर कौन सा है?

What is the variable in the polynomial (p(t)=6t-2-7t+3)?

Explanation opens after your attempt
Correct Answer

B. (t)

Step 1

Concept

The letter whose value can vary is the variable. Here the variable is (t).

Step 2

Why this answer is correct

The correct answer is B. (t). The letter whose value can vary is the variable. Here the variable is (t).

Step 3

Exam Tip

जिस अक्षर का मान बदल सकता है वह चर है। यहां चर (t) है।

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कौन सा मिलान भारत की भौतिक विशेषताओं में तथ्यात्मक रूप से गलत है?

Which matching is factually wrong in India's physical features?

Explanation opens after your attempt
Correct Answer

C. भाबर ज्वारीय खारा दलदलBhabar tidal saline marsh

Step 1

Concept

Bhabar is a pebbly porous foothill belt of the Himalayas not a tidal marsh. For exams keep Bhabar and Sundarbans separate.

Step 2

Why this answer is correct

The correct answer is C. भाबर ज्वारीय खारा दलदल / Bhabar tidal saline marsh. Bhabar is a pebbly porous foothill belt of the Himalayas not a tidal marsh. For exams keep Bhabar and Sundarbans separate.

Step 3

Exam Tip

भाबर हिमालय की तलहटी का कंकरीला छिद्रदार क्षेत्र है ज्वारीय दलदल नहीं। परीक्षा में भाबर और सुंदरवन अलग रखें।

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कौन सा मिलान भारत के भौतिक भूगोल में तथ्यात्मक रूप से गलत है?

Which matching is factually wrong in India's physical geography?

Explanation opens after your attempt
Correct Answer

B. भाबर ज्वारीय खारा दलदलBhabar tidal saline marsh

Step 1

Concept

Bhabar is a pebbly porous foothill belt of the Himalayas not a tidal marsh. For exams keep Bhabar and Sundarbans separate.

Step 2

Why this answer is correct

The correct answer is B. भाबर ज्वारीय खारा दलदल / Bhabar tidal saline marsh. Bhabar is a pebbly porous foothill belt of the Himalayas not a tidal marsh. For exams keep Bhabar and Sundarbans separate.

Step 3

Exam Tip

भाबर हिमालय की तलहटी का कंकरीला छिद्रदार क्षेत्र है ज्वारीय दलदल नहीं। परीक्षा में भाबर और सुंदरवन अलग रखें।

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कौन सा मिलान भारतीय भौतिक भूगोल में सबसे स्पष्ट रूप से गलत है?

Which matching is most clearly wrong in Indian physical geography?

Explanation opens after your attempt
Correct Answer

C. भाबर लवणीय समुद्री दलदलBhabar saline marine marsh

Step 1

Concept

Bhabar is a pebbly porous foothill belt of the Himalayas. For exams do not treat it as a marine marsh.

Step 2

Why this answer is correct

The correct answer is C. भाबर लवणीय समुद्री दलदल / Bhabar saline marine marsh. Bhabar is a pebbly porous foothill belt of the Himalayas. For exams do not treat it as a marine marsh.

Step 3

Exam Tip

भाबर हिमालय की तलहटी का कंकरीला छिद्रदार क्षेत्र है। परीक्षा में इसे समुद्री दलदल न समझें।

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कौन सा मिलान भारतीय भौतिक भूगोल में असंगत है?

Which matching is inconsistent in Indian physical geography?

Explanation opens after your attempt
Correct Answer

C. भाबर लवणीय समुद्री दलदलBhabar saline marine marsh

Step 1

Concept

Bhabar is a porous pebbly foothill belt of the Himalayas not a marine marsh. For exams keep Bhabar and Sundarbans separate.

Step 2

Why this answer is correct

The correct answer is C. भाबर लवणीय समुद्री दलदल / Bhabar saline marine marsh. Bhabar is a porous pebbly foothill belt of the Himalayas not a marine marsh. For exams keep Bhabar and Sundarbans separate.

Step 3

Exam Tip

भाबर हिमालय की तलहटी का छिद्रदार कंकरीला क्षेत्र है समुद्री दलदल नहीं। परीक्षा में भाबर और सुंदरवन को अलग रखें।

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कौन सा मिलान स्पष्ट रूप से असंगत है?

Which matching is clearly inconsistent?

Explanation opens after your attempt
Correct Answer

C. भाबर लवणीय समुद्री दलदलBhabar saline marine marsh

Step 1

Concept

Bhabar is a porous pebbly foothill belt of the Himalayas. For exams do not treat Bhabar as a marine marsh.

Step 2

Why this answer is correct

The correct answer is C. भाबर लवणीय समुद्री दलदल / Bhabar saline marine marsh. Bhabar is a porous pebbly foothill belt of the Himalayas. For exams do not treat Bhabar as a marine marsh.

Step 3

Exam Tip

भाबर हिमालय की तलहटी का छिद्रदार कंकरीला क्षेत्र है। परीक्षा में भाबर को समुद्री दलदल न समझें।

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कौन सा मिलान भौतिक विशेषताओं की दृष्टि से गलत है?

Which matching is wrong in terms of physical features?

Explanation opens after your attempt
Correct Answer

C. भाबर लवणीय समुद्री दलदलBhabar saline marine marsh

Step 1

Concept

Bhabar is a pebbly porous foothill belt of the Himalayas not a marine marsh. For exams keep Bhabar and Rann of Kachchh separate.

Step 2

Why this answer is correct

The correct answer is C. भाबर लवणीय समुद्री दलदल / Bhabar saline marine marsh. Bhabar is a pebbly porous foothill belt of the Himalayas not a marine marsh. For exams keep Bhabar and Rann of Kachchh separate.

Step 3

Exam Tip

भाबर हिमालय की तलहटी का कंकड़ वाला छिद्रदार क्षेत्र है समुद्री दलदल नहीं। परीक्षा में भाबर और कच्छ रण अलग रखें।

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कौन सा मिलान भौतिक भूगोल के अनुसार स्पष्ट रूप से गलत है?

Which matching is clearly incorrect according to physical geography?

Explanation opens after your attempt
Correct Answer

B. तराई शुष्क रेतीला मरुस्थलTerai dry sandy desert

Step 1

Concept

Terai is a moist and marshy region not a dry sandy desert. For exams keep Terai and Thar separate.

Step 2

Why this answer is correct

The correct answer is B. तराई शुष्क रेतीला मरुस्थल / Terai dry sandy desert. Terai is a moist and marshy region not a dry sandy desert. For exams keep Terai and Thar separate.

Step 3

Exam Tip

तराई नम और दलदली क्षेत्र है शुष्क रेतीला मरुस्थल नहीं। परीक्षा में तराई और थार अलग रखें।

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भारत के भौतिक मानचित्र में कौन सा मिलान गलत समझ पैदा कर सकता है?

Which matching can create a wrong understanding on India's physical map?

Explanation opens after your attempt
Correct Answer

B. भाबर ज्वारीय मैंग्रोव डेल्टाBhabar tidal mangrove delta

Step 1

Concept

Bhabar is a pebbly foothill belt of the Himalayas not a mangrove delta. For exams keep Bhabar and Sundarbans separate.

Step 2

Why this answer is correct

The correct answer is B. भाबर ज्वारीय मैंग्रोव डेल्टा / Bhabar tidal mangrove delta. Bhabar is a pebbly foothill belt of the Himalayas not a mangrove delta. For exams keep Bhabar and Sundarbans separate.

Step 3

Exam Tip

भाबर हिमालय की तलहटी का कंकड़ वाला क्षेत्र है मैंग्रोव डेल्टा नहीं। परीक्षा में भाबर और सुंदरवन अलग रखें।

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कौन सा मिलान स्पष्ट रूप से गलत है?

Which matching is clearly incorrect?

Explanation opens after your attempt
Correct Answer

D. नर्मदा पूर्वी डेल्टा नदीNarmada eastern delta river

Step 1

Concept

Narmada is a west flowing river and drains into Arabian Sea. For exams keep Narmada separate from east flowing delta rivers.

Step 2

Why this answer is correct

The correct answer is D. नर्मदा पूर्वी डेल्टा नदी / Narmada eastern delta river. Narmada is a west flowing river and drains into Arabian Sea. For exams keep Narmada separate from east flowing delta rivers.

Step 3

Exam Tip

नर्मदा पश्चिममुखी नदी है और अरब सागर में गिरती है। परीक्षा में नर्मदा को पूर्वमुखी डेल्टा नदियों से अलग रखें।

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कौन सा मिलान भारत की भौतिक विशेषताओं के अनुसार सही है?

Which matching is correct according to India's physical features?

Explanation opens after your attempt
Correct Answer

A. दक्कन ट्रैप लावा क्षेत्रDeccan Trap lava region

Step 1

Concept

Deccan Trap is linked with basaltic lava rocks. For exams remember Deccan Trap and black soil together.

Step 2

Why this answer is correct

The correct answer is A. दक्कन ट्रैप लावा क्षेत्र / Deccan Trap lava region. Deccan Trap is linked with basaltic lava rocks. For exams remember Deccan Trap and black soil together.

Step 3

Exam Tip

दक्कन ट्रैप बेसाल्टिक लावा चट्टानों से जुड़ा क्षेत्र है। परीक्षा में दक्कन ट्रैप और काली मिट्टी साथ याद रखें।

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भौतिक विशेषताओं के आधार पर कौन सा मिलान सही है?

Which matching is correct based on physical features?

Explanation opens after your attempt
Correct Answer

A. सुंदरवन मैंग्रोव डेल्टाSundarbans mangrove delta

Step 1

Concept

Sundarbans is a mangrove region in the Ganga Brahmaputra Delta. For exams avoid incorrect matchings.

Step 2

Why this answer is correct

The correct answer is A. सुंदरवन मैंग्रोव डेल्टा / Sundarbans mangrove delta. Sundarbans is a mangrove region in the Ganga Brahmaputra Delta. For exams avoid incorrect matchings.

Step 3

Exam Tip

सुंदरवन गंगा ब्रह्मपुत्र डेल्टा में मैंग्रोव क्षेत्र है। परीक्षा में गलत मिलानों से बचें।

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कौन सा मिलान गलत है?

Which matching is incorrect?

Explanation opens after your attempt
Correct Answer

D. शिवालिक समुद्री डेल्टाShiwalik marine delta

Step 1

Concept

Shiwalik is the outer Himalayan range not a marine delta. For exams keep Shiwalik and Sundarbans separate.

Step 2

Why this answer is correct

The correct answer is D. शिवालिक समुद्री डेल्टा / Shiwalik marine delta. Shiwalik is the outer Himalayan range not a marine delta. For exams keep Shiwalik and Sundarbans separate.

Step 3

Exam Tip

शिवालिक हिमालय की बाहरी श्रेणी है समुद्री डेल्टा नहीं। परीक्षा में शिवालिक और सुंदरवन अलग रखें।

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कौन सा मिलान भौतिक विशेषता के अनुसार सही है?

Which matching is correct according to physical feature?

Explanation opens after your attempt
Correct Answer

A. थार शुष्क मरुस्थलThar dry desert

Step 1

Concept

Thar is India's major dry desert region. For exams remember other matchings separately to avoid confusion.

Step 2

Why this answer is correct

The correct answer is A. थार शुष्क मरुस्थल / Thar dry desert. Thar is India's major dry desert region. For exams remember other matchings separately to avoid confusion.

Step 3

Exam Tip

थार भारत का प्रमुख शुष्क मरुस्थलीय क्षेत्र है। परीक्षा में बाकी मिलानों को भ्रम से बचाने के लिए अलग याद रखें।

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भारत में भौतिक विशेषताओं का अध्ययन करते समय कौन सा मिलान गलत है?

Which matching is incorrect while studying physical features of India?

Explanation opens after your attempt
Correct Answer

D. भाबर मैंग्रोव डेल्टाBhabar mangrove delta

Step 1

Concept

Bhabar is a pebbly belt of the Himalayan foothills not a mangrove delta. For exams keep Bhabar and Sundarbans separate.

Step 2

Why this answer is correct

The correct answer is D. भाबर मैंग्रोव डेल्टा / Bhabar mangrove delta. Bhabar is a pebbly belt of the Himalayan foothills not a mangrove delta. For exams keep Bhabar and Sundarbans separate.

Step 3

Exam Tip

भाबर हिमालय की तलहटी का कंकड़ वाला क्षेत्र है मैंग्रोव डेल्टा नहीं। परीक्षा में भाबर और सुंदरवन अलग रखें।

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निम्न में से एक चर वाला बहुपद कौन सा नहीं है?

Which of the following is not a polynomial in one variable?

Explanation opens after your attempt
Correct Answer

C. \(x^2+y+1\)

Step 1

Concept

\(x^2+y+1\) has two variables (x) and (y). Therefore it is not a polynomial in one variable.

Step 2

Why this answer is correct

The correct answer is C. \(x^2+y+1\). \(x^2+y+1\) has two variables (x) and (y). Therefore it is not a polynomial in one variable.

Step 3

Exam Tip

\(x^2+y+1\) में दो चर (x) और (y) हैं। इसलिए यह एक चर वाला बहुपद नहीं है।

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इनमें से कौन सा एक चर में बहुपद है?

Which of the following is a polynomial in one variable?

Explanation opens after your attempt
Correct Answer

A. (p(x)=3x-2-5x+7)

Step 1

Concept

In a polynomial in one variable, powers of the variable are non-negative integers. In exams, reject negative powers and roots of the variable.

Step 2

Why this answer is correct

The correct answer is A. (p(x)=3x-2-5x+7). In a polynomial in one variable, powers of the variable are non-negative integers. In exams, reject negative powers and roots of the variable.

Step 3

Exam Tip

एक चर के बहुपद में चर की घात केवल अशून्य पूर्णांक या शून्य होती है। परीक्षा में ऋणात्मक घात और मूल से बचें।

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कौन सा बहुपद एक चर (x) में है?

Which polynomial is in one variable (x)?

Explanation opens after your attempt
Correct Answer

A. \(x^2+2x+1\)

Step 1

Concept

A polynomial in one variable (x) contains only the variable (x). The other options have more than one variable.

Step 2

Why this answer is correct

The correct answer is A. \(x^2+2x+1\). A polynomial in one variable (x) contains only the variable (x). The other options have more than one variable.

Step 3

Exam Tip

एक चर (x) में बहुपद में केवल (x) चर होता है। अन्य विकल्पों में एक से अधिक चर हैं।

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बहुपद (p(t)=8t-2-3t+4) में चर कौन-सा है?

Which is the variable in the polynomial (p(t)=8t-2-3t+4)?

Explanation opens after your attempt
Correct Answer

B. (t)

Step 1

Concept

In (p(t)), the changing symbol is (t). So the variable is (t).

Step 2

Why this answer is correct

The correct answer is B. (t). In (p(t)), the changing symbol is (t). So the variable is (t).

Step 3

Exam Tip

(p(t)) में बदलने वाला चिन्ह (t) है। इसलिए चर (t) है।

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कौन सा व्यंजक बहुपद नहीं है क्योंकि चर की घात भिन्न है?

Which expression is not a polynomial because the variable has a fractional power?

Explanation opens after your attempt
Correct Answer

C. \(x^{\frac{3}{2}}+x+1\)

Step 1

Concept

In \(x^{\frac{3}{2}}\), the power of the variable is fractional, so it is not a polynomial. In a polynomial, powers are non-negative integers.

Step 2

Why this answer is correct

The correct answer is C. \(x^{\frac{3}{2}}+x+1\). In \(x^{\frac{3}{2}}\), the power of the variable is fractional, so it is not a polynomial. In a polynomial, powers are non-negative integers.

Step 3

Exam Tip

\(x^{\frac{3}{2}}\) में चर की घात भिन्न है, इसलिए यह बहुपद नहीं है। बहुपद में घातें अऋणात्मक पूर्णांक होती हैं।

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कौन सा विकल्प एक चर में बहुपद है लेकिन रैखिक नहीं है?

Which option is a polynomial in one variable but not linear?

Explanation opens after your attempt
Correct Answer

B. \(x^2+2x+3\)

Step 1

Concept

\(x^2+2x+3\) is a polynomial and its degree is (2). Therefore it is not linear.

Step 2

Why this answer is correct

The correct answer is B. \(x^2+2x+3\). \(x^2+2x+3\) is a polynomial and its degree is (2). Therefore it is not linear.

Step 3

Exam Tip

\(x^2+2x+3\) बहुपद है और इसकी घात (2) है। इसलिए यह रैखिक नहीं है।

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निम्न में से कौन सा बहुपद (x) में है लेकिन (y) में नहीं है?

Which of the following is a polynomial in (x) but not in (y)?

Explanation opens after your attempt
Correct Answer

A. \(x^2+3x+1\)

Step 1

Concept

\(x^2+3x+1\) has only the variable (x). So it is a one-variable polynomial in (x).

Step 2

Why this answer is correct

The correct answer is A. \(x^2+3x+1\). \(x^2+3x+1\) has only the variable (x). So it is a one-variable polynomial in (x).

Step 3

Exam Tip

\(x^2+3x+1\) में केवल (x) चर है। इसलिए यह (x) में एक चर वाला बहुपद है।

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कौन सा विकल्प एक चर में बहुपद है लेकिन द्विघात नहीं है?

Which option is a polynomial in one variable but not quadratic?

Explanation opens after your attempt
Correct Answer

B. \(4x^3+x-9\)

Step 1

Concept

\(4x^3+x-9\) is a polynomial and its degree is (3). Therefore it is not quadratic.

Step 2

Why this answer is correct

The correct answer is B. \(4x^3+x-9\). \(4x^3+x-9\) is a polynomial and its degree is (3). Therefore it is not quadratic.

Step 3

Exam Tip

\(4x^3+x-9\) बहुपद है और इसकी घात (3) है। इसलिए यह द्विघात नहीं है।

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कौन-सा व्यंजक एक चर वाला बहुपद है जिसमें वास्तविक गुणांक हैं?

Which expression is a polynomial in one variable with real coefficients?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{2}x^2-3x+1\)

Step 1

Concept

\(\sqrt{2}\) is a real number and the powers of (x) are whole numbers. So it is a polynomial.

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{2}x^2-3x+1\). \(\sqrt{2}\) is a real number and the powers of (x) are whole numbers. So it is a polynomial.

Step 3

Exam Tip

\(\sqrt{2}\) एक वास्तविक संख्या है और (x) की घातें पूर्ण संख्याएँ हैं। इसलिए यह बहुपद है।

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कौन-सा व्यंजक बहुपद नहीं है क्योंकि चर हर में है?

Which expression is not a polynomial because the variable is in the denominator?

Explanation opens after your attempt
Correct Answer

B. \(\frac{3}{x}+1\)

Step 1

Concept

\(\frac{3}{x}=3x^{-1}\), so the variable has a negative power. Therefore it is not a polynomial.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{3}{x}+1\). \(\frac{3}{x}=3x^{-1}\), so the variable has a negative power. Therefore it is not a polynomial.

Step 3

Exam Tip

\(\frac{3}{x}=3x^{-1}\) है और चर की घात ऋणात्मक है। इसलिए यह बहुपद नहीं है।

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कौन-सा व्यंजक (z) में एक चर वाला बहुपद है?

Which expression is a polynomial in one variable (z)?

Explanation opens after your attempt
Correct Answer

A. \(z^4-2z+1\)

Step 1

Concept

The expression \(z^4-2z+1\) has only (z) and no negative powers. So it is a polynomial in (z).

Step 2

Why this answer is correct

The correct answer is A. \(z^4-2z+1\). The expression \(z^4-2z+1\) has only (z) and no negative powers. So it is a polynomial in (z).

Step 3

Exam Tip

\(z^4-2z+1\) में केवल (z) है और घातें ऋणात्मक नहीं हैं। इसलिए यह (z) में बहुपद है।

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\(2x^2+3xy+1\) एक चर वाला बहुपद क्यों नहीं है?

Why is \(2x^2+3xy+1\) not a polynomial in one variable?

Explanation opens after your attempt
Correct Answer

A. क्योंकि इसमें दो चर हैंBecause it has two variables

Step 1

Concept

It contains both (x) and (y). A polynomial in one variable should contain only one variable.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि इसमें दो चर हैं / Because it has two variables. It contains both (x) and (y). A polynomial in one variable should contain only one variable.

Step 3

Exam Tip

इसमें (x) और (y) दोनों चर हैं। एक चर वाले बहुपद में केवल एक ही चर होना चाहिए।

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कौन-सा व्यंजक (x) में एक चर वाला बहुपद है?

Which expression is a polynomial in one variable (x)?

Explanation opens after your attempt
Correct Answer

A. \(3x^2-5x+7\)

Step 1

Concept

The expression \(3x^2-5x+7\) has only (x) and non-negative integer powers. In exams, the variable power must not be negative or fractional.

Step 2

Why this answer is correct

The correct answer is A. \(3x^2-5x+7\). The expression \(3x^2-5x+7\) has only (x) and non-negative integer powers. In exams, the variable power must not be negative or fractional.

Step 3

Exam Tip

\(3x^2-5x+7\) में केवल (x) है और घातें पूर्ण संख्याएँ हैं। परीक्षा में चर की घात ऋणात्मक या भिन्न नहीं होनी चाहिए।

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नदी और झीलों के कठिन मिलान प्रश्नों के लिए सबसे प्रभावी तरीका कौन सा है?

Which is the most effective method for difficult matching questions on rivers and lakes?

Explanation opens after your attempt
Correct Answer

A. स्रोत राज्य नदी तंत्र मुहाना झील प्रकार और विशेषता को साथ पढ़नाStudy source state river system mouth lake type and feature together

Step 1

Concept

Studying source state river system and feature together makes difficult matching questions easier. For exams connect every fact with the map.

Step 2

Why this answer is correct

The correct answer is A. स्रोत राज्य नदी तंत्र मुहाना झील प्रकार और विशेषता को साथ पढ़ना / Study source state river system mouth lake type and feature together. Studying source state river system and feature together makes difficult matching questions easier. For exams connect every fact with the map.

Step 3

Exam Tip

स्रोत राज्य नदी तंत्र और विशेषता साथ पढ़ने से कठिन मिलान प्रश्न आसान होते हैं। परीक्षा में हर तथ्य को मानचित्र से जोड़ें।

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भारत की नदियों और झीलों के मानचित्र प्रश्नों में सबसे उपयोगी मिलान क्या होता है?

What is the most useful matching for map questions on rivers and lakes of India?

Explanation opens after your attempt
Correct Answer

B. राज्य नदी तंत्र मुहाना और विशेषताState river system mouth and feature

Step 1

Concept

Studying state river system mouth and feature together makes map questions easier. For exams connect every river and lake with the map.

Step 2

Why this answer is correct

The correct answer is B. राज्य नदी तंत्र मुहाना और विशेषता / State river system mouth and feature. Studying state river system mouth and feature together makes map questions easier. For exams connect every river and lake with the map.

Step 3

Exam Tip

राज्य नदी तंत्र मुहाना और विशेषता साथ पढ़ने से मानचित्र प्रश्न आसान होते हैं। परीक्षा में हर नदी और झील को मानचित्र से जोड़ें।

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भोजताल फतेह सागर और हुसैन सागर किस प्रकार के मिलान में आते हैं?

Bhojtal Fateh Sagar and Hussain Sagar belong to which type of matching?

Explanation opens after your attempt
Correct Answer

D. शहर झील मिलानCity lake matching

Step 1

Concept

Bhojtal is linked with Bhopal Fateh Sagar with Udaipur and Hussain Sagar with Hyderabad. For exams remember city lake matching.

Step 2

Why this answer is correct

The correct answer is D. शहर झील मिलान / City lake matching. Bhojtal is linked with Bhopal Fateh Sagar with Udaipur and Hussain Sagar with Hyderabad. For exams remember city lake matching.

Step 3

Exam Tip

भोजताल भोपाल फतेह सागर उदयपुर और हुसैन सागर हैदराबाद से जुड़े हैं। परीक्षा में शहर झील मिलान याद रखें।

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सोन नदी और तवा नदी का सही मिलान कौन सा है?

What is the correct matching of Son River and Tawa River?

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Correct Answer

B. सोन गंगा की और तवा नर्मदा की सहायक हैSon is tributary of Ganga and Tawa of Narmada

Step 1

Concept

Son is a tributary of Ganga while Tawa is a tributary of Narmada. For exams match main rivers and tributaries carefully.

Step 2

Why this answer is correct

The correct answer is B. सोन गंगा की और तवा नर्मदा की सहायक है / Son is tributary of Ganga and Tawa of Narmada. Son is a tributary of Ganga while Tawa is a tributary of Narmada. For exams match main rivers and tributaries carefully.

Step 3

Exam Tip

सोन गंगा की सहायक नदी है जबकि तवा नर्मदा की सहायक नदी है। परीक्षा में मुख्य नदी और सहायक नदी का मिलान ध्यान से करें।

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भूगर्भीय उत्पत्ति के आधार पर दक्कन ट्रैप और लक्षद्वीप का सही मिलान कौन सा है?

Which is the correct matching of Deccan Trap and Lakshadweep based on geological origin?

Explanation opens after your attempt
Correct Answer

A. दक्कन ट्रैप लावा मूल और लक्षद्वीप प्रवाल मूलDeccan Trap lava origin and Lakshadweep coral origin

Step 1

Concept

Deccan Trap is linked with basaltic lava and Lakshadweep with coral. For exams identify by origin.

Step 2

Why this answer is correct

The correct answer is A. दक्कन ट्रैप लावा मूल और लक्षद्वीप प्रवाल मूल / Deccan Trap lava origin and Lakshadweep coral origin. Deccan Trap is linked with basaltic lava and Lakshadweep with coral. For exams identify by origin.

Step 3

Exam Tip

दक्कन ट्रैप बेसाल्टिक लावा से और लक्षद्वीप प्रवाल से जुड़ा है। परीक्षा में उत्पत्ति के आधार पर पहचान करें।

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हिमालय के समानांतर क्रम को समझने के लिए कौन सा मिलान सही है?

Which matching correctly explains the parallel order of the Himalayas?

Explanation opens after your attempt
Correct Answer

A. हिमाद्रि सबसे उत्तरी और शिवालिक सबसे दक्षिणीHimadri northernmost and Shiwalik southernmost

Step 1

Concept

Himadri is the highest northern range and Shiwalik is the outer southern range. For exams remember the north to south order.

Step 2

Why this answer is correct

The correct answer is A. हिमाद्रि सबसे उत्तरी और शिवालिक सबसे दक्षिणी / Himadri northernmost and Shiwalik southernmost. Himadri is the highest northern range and Shiwalik is the outer southern range. For exams remember the north to south order.

Step 3

Exam Tip

हिमाद्रि उत्तर में सबसे ऊंची और शिवालिक दक्षिण में सबसे बाहरी श्रेणी है। परीक्षा में उत्तर से दक्षिण क्रम याद रखें।

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भौतिक विशेषताओं की दृष्टि से भारत के द्वीप समूहों का सही मिलान कौन सा है?

Which is the correct matching of India's island groups in terms of physical features?

Explanation opens after your attempt
Correct Answer

A. लक्षद्वीप प्रवाल और अंडमान निकोबार ज्वालामुखीय प्रभाव वाले द्वीपLakshadweep coral and Andaman Nicobar islands with volcanic influence

Step 1

Concept

Lakshadweep is coral while Andaman Nicobar also has volcanic features. For exams remember Barren Island.

Step 2

Why this answer is correct

The correct answer is A. लक्षद्वीप प्रवाल और अंडमान निकोबार ज्वालामुखीय प्रभाव वाले द्वीप / Lakshadweep coral and Andaman Nicobar islands with volcanic influence. Lakshadweep is coral while Andaman Nicobar also has volcanic features. For exams remember Barren Island.

Step 3

Exam Tip

लक्षद्वीप प्रवाल द्वीप है और अंडमान निकोबार में ज्वालामुखीय विशेषता भी मिलती है। परीक्षा में बैरन द्वीप याद रखें।

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विश्व धरोहर स्थलों पर विशेषज्ञ स्तर की तैयारी के लिए सबसे अच्छा मिलान तरीका कौन सा है?

Which matching method is best for expert level preparation on World Heritage Sites?

Explanation opens after your attempt
Correct Answer

A. स्थल देश श्रेणी काल मुख्य मूल्य और संरक्षण चुनौती साथ मिलानाMatch site country category period main value and conservation challenge together

Step 1

Concept

Studying with five points reduces confusion. For exams write name country category value and threat together.

Step 2

Why this answer is correct

The correct answer is A. स्थल देश श्रेणी काल मुख्य मूल्य और संरक्षण चुनौती साथ मिलाना / Match site country category period main value and conservation challenge together. Studying with five points reduces confusion. For exams write name country category value and threat together.

Step 3

Exam Tip

पांच बिंदुओं से पढ़ने पर भ्रम कम होता है। परीक्षा में नाम देश श्रेणी मूल्य और खतरा साथ लिखें।

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विश्व धरोहर स्थलों पर परीक्षा में त्रुटि से बचने के लिए सबसे अच्छा मिलान तरीका कौन सा है?

Which matching method is best to avoid mistakes in exams on World Heritage Sites?

Explanation opens after your attempt
Correct Answer

A. स्थल देश श्रेणी मुख्य विशेषता और संरक्षण मुद्दा मिलानाMatch site country category main feature and conservation issue

Step 1

Concept

Matching a site with four points reduces mistakes. For exams remember name country category and feature together.

Step 2

Why this answer is correct

The correct answer is A. स्थल देश श्रेणी मुख्य विशेषता और संरक्षण मुद्दा मिलाना / Match site country category main feature and conservation issue. Matching a site with four points reduces mistakes. For exams remember name country category and feature together.

Step 3

Exam Tip

स्थल को चार बिंदुओं से मिलाने पर गलतियां कम होती हैं। परीक्षा में नाम देश श्रेणी और विशेषता साथ याद रखें।

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मानवाधिकार दिवस और संयुक्त राष्ट्र दिवस की तिथियों में सही मिलान कौन सा है?

Which is the correct matching of Human Rights Day and United Nations Day?

Explanation opens after your attempt
Correct Answer

A. मानवाधिकार दिवस दस दिसंबर और संयुक्त राष्ट्र दिवस चौबीस अक्टूबरHuman Rights Day 10 December and UN Day 24 October

Step 1

Concept

Human Rights Day is on 10 December and UN Day is on 24 October. Exam tip: remember both dates separately.

Step 2

Why this answer is correct

The correct answer is A. मानवाधिकार दिवस दस दिसंबर और संयुक्त राष्ट्र दिवस चौबीस अक्टूबर / Human Rights Day 10 December and UN Day 24 October. Human Rights Day is on 10 December and UN Day is on 24 October. Exam tip: remember both dates separately.

Step 3

Exam Tip

मानवाधिकार दिवस दस दिसंबर और संयुक्त राष्ट्र दिवस चौबीस अक्टूबर को मनाया जाता है। परीक्षा में दोनों तिथियों को अलग याद रखें।

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1980 और 1983 के भारत रत्न प्राप्तकर्ताओं का सही मिलान कौन सा है?

Which is the correct matching of Bharat Ratna recipients for 1980 and 1983?

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Correct Answer

A. 1980 मदर टेरेसा और 1983 विनोबा भावे1980 Mother Teresa and 1983 Vinoba Bhave

Step 1

Concept

Mother Teresa was honoured in 1980 and Vinoba Bhave in 1983. Keep the early 1980s names separate in exams.

Step 2

Why this answer is correct

The correct answer is A. 1980 मदर टेरेसा और 1983 विनोबा भावे / 1980 Mother Teresa and 1983 Vinoba Bhave. Mother Teresa was honoured in 1980 and Vinoba Bhave in 1983. Keep the early 1980s names separate in exams.

Step 3

Exam Tip

1980 में मदर टेरेसा और 1983 में विनोबा भावे को सम्मान मिला। परीक्षा में अस्सी के दशक के शुरुआती नाम अलग रखें।

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1997 और 1998 के वर्ष समूहों का सही मिलान कौन सा है?

Which matching of the 1997 and 1998 year groups is correct?

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Correct Answer

B. 1997 ए पी जे अब्दुल कलाम अरुणा आसफ अली गुलजारीलाल नंदा 1998 एम एस सुब्बुलक्ष्मी सी सुब्रमण्यम1997 A P J Abdul Kalam Aruna Asaf Ali Gulzarilal Nanda 1998 M S Subbulakshmi C Subramaniam

Step 1

Concept

In 1997 the recipients were Kalam Aruna Asaf Ali and Nanda while in 1998 they were Subbulakshmi and C Subramaniam. Avoid reversing the order.

Step 2

Why this answer is correct

The correct answer is B. 1997 ए पी जे अब्दुल कलाम अरुणा आसफ अली गुलजारीलाल नंदा 1998 एम एस सुब्बुलक्ष्मी सी सुब्रमण्यम / 1997 A P J Abdul Kalam Aruna Asaf Ali Gulzarilal Nanda 1998 M S Subbulakshmi C Subramaniam. In 1997 the recipients were Kalam Aruna Asaf Ali and Nanda while in 1998 they were Subbulakshmi and C Subramaniam. Avoid reversing the order.

Step 3

Exam Tip

1997 में कलाम अरुणा आसफ अली और नंदा थे जबकि 1998 में सुब्बुलक्ष्मी और सी सुब्रमण्यम थे। परीक्षा में क्रम बदलने से बचें।

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अभिलेखीय तिथि में संवत और ईस्वी सन् मिलाने की गलती से कौन सा जोखिम होता है?

What risk arises from incorrectly matching an inscriptional era with CE dates?

Explanation opens after your attempt
Correct Answer

A. पूरे कालक्रम की गलत व्याख्याWrong interpretation of the whole chronology

Step 1

Concept

Wrong era conversion can misdate rulers and events. For exams, identify the era before converting dates.

Step 2

Why this answer is correct

The correct answer is A. पूरे कालक्रम की गलत व्याख्या / Wrong interpretation of the whole chronology. Wrong era conversion can misdate rulers and events. For exams, identify the era before converting dates.

Step 3

Exam Tip

गलत संवत रूपांतरण से शासक और घटना की तिथि गलत हो सकती है। परीक्षा में संवत पहचान कर ही तिथि बदलें।

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ऐतिहासिक कालक्रम बनाते समय संवतों का मिलान क्यों आवश्यक होता है?

Why is matching eras necessary while building historical chronology?

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Correct Answer

C. क्योंकि अलग संवतों को सामान्य ईस्वी समय से जोड़ना पड़ता हैBecause different eras must be linked with common CE chronology

Step 1

Concept

Matching Shaka Gupta and other eras with CE years is necessary for chronology. For exams, study dates comparatively.

Step 2

Why this answer is correct

The correct answer is C. क्योंकि अलग संवतों को सामान्य ईस्वी समय से जोड़ना पड़ता है / Because different eras must be linked with common CE chronology. Matching Shaka Gupta and other eras with CE years is necessary for chronology. For exams, study dates comparatively.

Step 3

Exam Tip

शक गुप्त और अन्य संवतों को ईस्वी वर्षों से मिलाना कालक्रम के लिए जरूरी है। परीक्षा में तिथियों को तुलनात्मक रूप से पढ़ें।

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वाशिंग सोडा और बेकिंग सोडा में सही मिलान कौन सा है?

Which is the correct matching for washing soda and baking soda?

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Correct Answer

B. वाशिंग सोडा सोडियम कार्बोनेट दशजल है, बेकिंग सोडा सोडियम हाइड्रोजन कार्बोनेट हैWashing soda is sodium carbonate decahydrate, baking soda is sodium hydrogen carbonate

Step 1

Concept

Washing soda is sodium carbonate decahydrate.

Step 2

Why this answer is correct

Baking soda is sodium hydrogen carbonate.

Step 3

Exam Tip

Remember both names along with their uses. पहला बिंदु: वाशिंग सोडा का रासायनिक नाम सोडियम कार्बोनेट दशजल है। दूसरा बिंदु: बेकिंग सोडा का रासायनिक नाम सोडियम हाइड्रोजन कार्बोनेट है। तीसरा बिंदु: दोनों नामों को उनके उपयोगों के साथ याद करें।

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यदि (p(x)=x-4-5x-2+4) है, तो (p(x)) का घात कितना है?

If (p(x)=x-4-5x-2+4), what is the degree of (p(x))?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

The highest power is \(x^4\), so the degree is (4). Terms with zero coefficients do not affect the degree.

Step 2

Why this answer is correct

The correct answer is A. (4). The highest power is \(x^4\), so the degree is (4). Terms with zero coefficients do not affect the degree.

Step 3

Exam Tip

सबसे बड़ी घात \(x^4\) है, इसलिए घात (4) है। शून्य गुणांक वाले पदों को घात तय करने में नहीं गिनते।

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यदि (p(x)=ax-2+bx+c) में \(a\neq0\) है और (p(1)=p(-1)=0) है, तो (b) का मान क्या होगा?

If (p(x)=ax-2+bx+c) with \(a\neq0\) and (p(1)=p(-1)=0), what is the value of (b)?

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

(p(1)=a+b+c) and (p(-1)=a-b+c); subtracting gives (2b=0). In exams, use addition or subtraction for symmetric inputs.

Step 2

Why this answer is correct

The correct answer is A. (0). (p(1)=a+b+c) and (p(-1)=a-b+c); subtracting gives (2b=0). In exams, use addition or subtraction for symmetric inputs.

Step 3

Exam Tip

(p(1)=a+b+c) और (p(-1)=a-b+c) हैं, घटाने पर (2b=0) मिलता है। परीक्षा में सममित मानों पर जोड़-घटाव जल्दी करें।

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निम्न में से (y) में बहुपद कौन सा है?

Which of the following is a polynomial in (y)?

Explanation opens after your attempt
Correct Answer

A. \(y^2-3y+2\)

Step 1

Concept

In \(y^2-3y+2\), the powers of (y) are whole numbers. A polynomial can be in one variable such as (y).

Step 2

Why this answer is correct

The correct answer is A. \(y^2-3y+2\). In \(y^2-3y+2\), the powers of (y) are whole numbers. A polynomial can be in one variable such as (y).

Step 3

Exam Tip

\(y^2-3y+2\) में (y) की घातें पूर्ण संख्याएँ हैं। बहुपद किसी एक चर जैसे (y) में भी हो सकता है।

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क्या \(4x^2-3\sqrt{x}+1\) (x) में बहुपद है?

Is \(4x^2-3\sqrt{x}+1\) a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

B. नहींNo

Step 1

Concept

\(\sqrt{x}=x^{\frac{1}{2}}\), and \(\frac{1}{2}\) is not a whole number. So it is not a polynomial in (x).

Step 2

Why this answer is correct

The correct answer is B. नहीं / No. \(\sqrt{x}=x^{\frac{1}{2}}\), and \(\frac{1}{2}\) is not a whole number. So it is not a polynomial in (x).

Step 3

Exam Tip

\(\sqrt{x}=x^{\frac{1}{2}}\) है और \(\frac{1}{2}\) पूर्ण संख्या नहीं है। इसलिए यह (x) में बहुपद नहीं है।

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(p(x)=x-2+3x+2) के लिए (p(1)) का मान क्या है?

For (p(x)=x-2+3x+2), what is the value of (p(1))?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

(p(1)=12+3\cdot1+2=6). While evaluating, replace every (x) with the given number.

Step 2

Why this answer is correct

The correct answer is C. (6). (p(1)=12+3\cdot1+2=6). While evaluating, replace every (x) with the given number.

Step 3

Exam Tip

(p(1)=12+3\cdot1+2=6) है। मान निकालते समय हर (x) की जगह दी गई संख्या रखें।

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यदि (p(x)=2x-3-5x+9) है, तो इसमें \(x^2\) का गुणांक क्या है?

If (p(x)=2x-3-5x+9), what is the coefficient of \(x^2\)?

Explanation opens after your attempt
Correct Answer

D. (0)

Step 1

Concept

There is no \(x^2\)-term in this polynomial, so its coefficient is (0). The coefficient of a missing term is always taken as (0).

Step 2

Why this answer is correct

The correct answer is D. (0). There is no \(x^2\)-term in this polynomial, so its coefficient is (0). The coefficient of a missing term is always taken as (0).

Step 3

Exam Tip

इस बहुपद में \(x^2\) पद नहीं है, इसलिए उसका गुणांक (0) है। अनुपस्थित पद का गुणांक हमेशा (0) माना जाता है।

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निम्न में से कौन सा (x) में बहुपद है?

Which of the following is a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

A. \(x^2+3x+5\)

Step 1

Concept

A polynomial has only non-negative integer powers of (x). In exams check the power of every term.

Step 2

Why this answer is correct

The correct answer is A. \(x^2+3x+5\). A polynomial has only non-negative integer powers of (x). In exams check the power of every term.

Step 3

Exam Tip

बहुपद में (x) की घात केवल पूर्णांक और अशून्य नहीं बल्कि ऋणात्मक नहीं होनी चाहिए। परीक्षा में हर पद की घात जांचें।

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यदि (p(x)=x-2-4x+6), तो (p(x+1)-p(x)) का मान क्या है?

If (p(x)=x-2-4x+6), what is the value of (p(x+1)-p(x))?

Explanation opens after your attempt
Correct Answer

A. (2x-3)

Step 1

Concept

(p(x+1)=x-2-2x+3) and (p(x+1)-p(x)=2x-3). In such questions, substitute (x+1) carefully first.

Step 2

Why this answer is correct

The correct answer is A. (2x-3). (p(x+1)=x-2-2x+3) and (p(x+1)-p(x)=2x-3). In such questions, substitute (x+1) carefully first.

Step 3

Exam Tip

(p(x+1)=x-2-2x+3) और (p(x+1)-p(x)=2x-3) है। ऐसे प्रश्नों में पहले (x+1) को सावधानी से प्रतिस्थापित करें।

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यदि (p(x)=x-2-8x+16) है, तो (p(4+t)) का मान क्या है?

If (p(x)=x-2-8x+16), what is the value of (p(4+t))?

Explanation opens after your attempt
Correct Answer

A. \(t^2\)

Step 1

Concept

(p(x)=(x-4)2), so (p(4+t)=t-2). In such questions, first form a perfect square.

Step 2

Why this answer is correct

The correct answer is A. \(t^2\). (p(x)=(x-4)2), so (p(4+t)=t-2). In such questions, first form a perfect square.

Step 3

Exam Tip

(p(x)=(x-4)2), इसलिए (p(4+t)=t-2)। ऐसे प्रश्नों में पहले पूर्ण वर्ग बनाना आसान होता है।

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यदि (p(x)=x-3-1), तो निम्न में से कौन-सा रैखिक गुणनखंड है?

If (p(x)=x-3-1), which of the following is a linear factor?

Explanation opens after your attempt
Correct Answer

A. (x-1)

Step 1

Concept

(x-3-1=(x-1)\(x^2+x+1\)). Therefore (x-1) is a linear factor.

Step 2

Why this answer is correct

The correct answer is A. (x-1). (x-3-1=(x-1)\(x^2+x+1\)). Therefore (x-1) is a linear factor.

Step 3

Exam Tip

(x-3-1=(x-1)\(x^2+x+1\)) है। इसलिए (x-1) रैखिक गुणनखंड है।

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यदि (p(x)=x-2-ax+b) के शून्यक (a) और (b) हैं, तो कौन-सा संबंध सही है?

If the zeroes of (p(x)=x-2-ax+b) are (a) and (b), which relation is correct?

Explanation opens after your attempt
Correct Answer

A. (a+b=a) और (ab=b)(a+b=a) and (ab=b)

Step 1

Concept

The sum of zeroes from the polynomial is (a) and the product is (b). Hence if the zeroes are (a,b), then (a+b=a) and (ab=b).

Step 2

Why this answer is correct

The correct answer is A. (a+b=a) और (ab=b) / (a+b=a) and (ab=b). The sum of zeroes from the polynomial is (a) and the product is (b). Hence if the zeroes are (a,b), then (a+b=a) and (ab=b).

Step 3

Exam Tip

शून्यकों का योग बहुपद से (a) और गुणनफल (b) है। इसलिए यदि शून्यक (a,b) हैं, तो (a+b=a) और (ab=b) होना चाहिए।

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यदि (p(x)=x-2+px+q) और (p(1)=0,\ p(2)=0), तो (p+q) क्या है?

If (p(x)=x-2+px+q) and (p(1)=0,\ p(2)=0), what is (p+q)?

Explanation opens after your attempt
Correct Answer

A. -(1)

Step 1

Concept

The zeroes are (1) and (2), so the polynomial is \(x^2-3x+2\). Thus (p=-3,\ q=2), and (p+q=-1).

Step 2

Why this answer is correct

The correct answer is A. -(1). The zeroes are (1) and (2), so the polynomial is \(x^2-3x+2\). Thus (p=-3,\ q=2), and (p+q=-1).

Step 3

Exam Tip

शून्यक (1) और (2) हैं, इसलिए बहुपद \(x^2-3x+2\) है। अतः (p=-3,\ q=2) और (p+q=-1)।

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यदि (p(x)=2x-2+x-6), तो (2p(1)-p(-2)) का मान क्या है?

If (p(x)=2x-2+x-6), what is the value of (2p(1)-p(-2))?

Explanation opens after your attempt
Correct Answer

A. -(6)

Step 1

Concept

(p(1)=2+1-6=-3) and (p(-2)=8-2-6=0). Therefore (2p(1)-p(-2)=-6).

Step 2

Why this answer is correct

The correct answer is A. -(6). (p(1)=2+1-6=-3) and (p(-2)=8-2-6=0). Therefore (2p(1)-p(-2)=-6).

Step 3

Exam Tip

(p(1)=2+1-6=-3) और (p(-2)=8-2-6=0)। इसलिए (2p(1)-p(-2)=-6)।

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यदि (p(x)=x-2-6x+8), तो शून्यकों के वर्गों से बना मोनिक बहुपद कौन-सा है?

If (p(x)=x-2-6x+8), which monic polynomial has the squares of its zeroes as zeroes?

Explanation opens after your attempt
Correct Answer

A. \(x^2-20x+64\)

Step 1

Concept

The original zeroes are (2) and (4), so the new zeroes are (4) and (16). The new polynomial is \(x^2-20x+64\).

Step 2

Why this answer is correct

The correct answer is A. \(x^2-20x+64\). The original zeroes are (2) and (4), so the new zeroes are (4) and (16). The new polynomial is \(x^2-20x+64\).

Step 3

Exam Tip

मूल शून्यक (2) और (4) हैं, इसलिए नए शून्यक (4) और (16) हैं। नया बहुपद \(x^2-20x+64\) है।

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यदि (p(x)=x-2+2x+c) का कोई वास्तविक शून्यक नहीं है, तो (c) के लिए कौन-सी शर्त सही है?

If (p(x)=x-2+2x+c) has no real zero, which condition on (c) is correct?

Explanation opens after your attempt
Correct Answer

A. (c>1)

Step 1

Concept

For no real zero, the discriminant must satisfy (4-4c<0). This gives (c>1).

Step 2

Why this answer is correct

The correct answer is A. (c>1). For no real zero, the discriminant must satisfy (4-4c<0). This gives (c>1).

Step 3

Exam Tip

कोई वास्तविक शून्यक नहीं होने के लिए विविक्तकर (4-4c<0) चाहिए। इससे (c>1) मिलता है।

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यदि (p(x)=x-2-7x+12) है, तो (p(x)) का ग्राफ (x)-अक्ष को किन बिंदुओं पर काटेगा?

If (p(x)=x-2-7x+12), at which points will the graph of (p(x)) cut the (x)-axis?

Explanation opens after your attempt
Correct Answer

A. ((3,0),(4,0))

Step 1

Concept

(x-2-7x+12=(x-3)(x-4)), so the zeroes are (3) and (4). The (x)-axis points are ((3,0)) and ((4,0)).

Step 2

Why this answer is correct

The correct answer is A. ((3,0),(4,0)). (x-2-7x+12=(x-3)(x-4)), so the zeroes are (3) and (4). The (x)-axis points are ((3,0)) and ((4,0)).

Step 3

Exam Tip

(x-2-7x+12=(x-3)(x-4)), इसलिए शून्यक (3) और (4) हैं। (x)-अक्ष पर बिंदु ((3,0)) और ((4,0)) होंगे।

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यदि (p(x)=x-2+5x+6) और (r(x)=p(-x)), तो (r(x)) के शून्यक कौन-से हैं?

If (p(x)=x-2+5x+6) and (r(x)=p(-x)), what are the zeroes of (r(x))?

Explanation opens after your attempt
Correct Answer

A. (2,3)

Step 1

Concept

The zeroes of (p(x)) are (-2) and (-3). For (p(-x)=0), (-x=-2) or (-x=-3), so (x=2,3).

Step 2

Why this answer is correct

The correct answer is A. (2,3). The zeroes of (p(x)) are (-2) and (-3). For (p(-x)=0), (-x=-2) or (-x=-3), so (x=2,3).

Step 3

Exam Tip

(p(x)) के शून्यक (-2) और (-3) हैं। (p(-x)=0) के लिए (-x=-2) या (-x=-3), इसलिए (x=2,3)।

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यदि (p(x)=x-3-3x-2-4x+12), तो पूर्ण गुणनखंड रूप क्या है?

If (p(x)=x-3-3x-2-4x+12), what is the complete factor form?

Explanation opens after your attempt
Correct Answer

A. ((x-3)(x-2)(x+2))

Step 1

Concept

By grouping, (x-2(x-3)-4(x-3)=(x-3)\(x^2-4\)). Thus the factors are ((x-3)(x-2)(x+2)).

Step 2

Why this answer is correct

The correct answer is A. ((x-3)(x-2)(x+2)). By grouping, (x-2(x-3)-4(x-3)=(x-3)\(x^2-4\)). Thus the factors are ((x-3)(x-2)(x+2)).

Step 3

Exam Tip

समूहीकरण से (x-2(x-3)-4(x-3)=(x-3)\(x^2-4\)) मिलता है। इसलिए गुणनखंड ((x-3)(x-2)(x+2)) हैं।

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यदि (p(x)=x-2-4x+3) है, तो कौन-सा मान (p(x)<0) बनाता है?

If (p(x)=x-2-4x+3), which value makes (p(x)<0)?

Explanation opens after your attempt
Correct Answer

A. (2)

Step 1

Concept

(p(x)=(x-1)(x-3)), and it is negative for (1<x<3). Therefore (x=2) is correct.

Step 2

Why this answer is correct

The correct answer is A. (2). (p(x)=(x-1)(x-3)), and it is negative for (1<x<3). Therefore (x=2) is correct.

Step 3

Exam Tip

(p(x)=(x-1)(x-3)) है और (1<x<3) में मान ऋणात्मक होता है। इसलिए (x=2) सही है।

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यदि (p(x)=x-2-2x+k) का न्यूनतम मान (3) है, तो (k) क्या है?

If the minimum value of (p(x)=x-2-2x+k) is (3), what is (k)?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

(x-2-2x+k=(x-1)2+k-1), so the minimum value is (k-1). From (k-1=3), (k=4).

Step 2

Why this answer is correct

The correct answer is A. (4). (x-2-2x+k=(x-1)2+k-1), so the minimum value is (k-1). From (k-1=3), (k=4).

Step 3

Exam Tip

(x-2-2x+k=(x-1)2+k-1), इसलिए न्यूनतम मान (k-1) है। (k-1=3) से (k=4)।

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यदि (p(x)=x-2+ax+a) में (p(1)=0), तो (a) क्या है?

If (p(x)=x-2+ax+a) and (p(1)=0), what is (a)?

Explanation opens after your attempt
Correct Answer

A. -\(\frac{1}{2}\)

Step 1

Concept

(p(1)=1+a+a=0), so (2a=-1). Therefore \(a=-\frac{1}{2}\).

Step 2

Why this answer is correct

The correct answer is A. -\(\frac{1}{2}\). (p(1)=1+a+a=0), so (2a=-1). Therefore \(a=-\frac{1}{2}\).

Step 3

Exam Tip

(p(1)=1+a+a=0), इसलिए (2a=-1)। अतः \(a=-\frac{1}{2}\) है।

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यदि (p(x)=x-4-16), तो \(x^2+4\) के कारण वास्तविक शून्यकों पर क्या प्रभाव पड़ता है?

For (p(x)=x-4-16), what effect does \(x^2+4\) have on real zeroes?

Explanation opens after your attempt
Correct Answer

A. यह कोई वास्तविक शून्यक नहीं देताIt gives no real zero

Step 1

Concept

(x-4-16=\(x^2-4\)\(x^2+4\)). The factor \(x^2+4\) is never (0) for real (x).

Step 2

Why this answer is correct

The correct answer is A. यह कोई वास्तविक शून्यक नहीं देता / It gives no real zero. (x-4-16=\(x^2-4\)\(x^2+4\)). The factor \(x^2+4\) is never (0) for real (x).

Step 3

Exam Tip

(x-4-16=\(x^2-4\)\(x^2+4\)) है। \(x^2+4\) वास्तविक (x) के लिए कभी (0) नहीं होता।

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यदि (p(x)=5x-2-20x+20), तो इसके शून्यकों का योग क्या है?

If (p(x)=5x-2-20x+20), what is the sum of its zeroes?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

The sum is \(-\frac{b}{a}=-\frac{-20}{5}=4\). Even if a common factor is removed first, the sum remains the same.

Step 2

Why this answer is correct

The correct answer is A. (4). The sum is \(-\frac{b}{a}=-\frac{-20}{5}=4\). Even if a common factor is removed first, the sum remains the same.

Step 3

Exam Tip

योग \(-\frac{b}{a}=-\frac{-20}{5}=4\) है। पहले सामान्य गुणनखंड निकालना चाहें तो भी योग वही रहेगा।

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यदि (p(x)=x-2+2x-24), तो (p(x)) का कौन-सा गुणनखंड है?

If (p(x)=x-2+2x-24), which is a factor of (p(x))?

Explanation opens after your attempt
Correct Answer

A. (x-4)

Step 1

Concept

(x-2+2x-24=(x-4)(x+6)). Therefore (x-4) is a factor.

Step 2

Why this answer is correct

The correct answer is A. (x-4). (x-2+2x-24=(x-4)(x+6)). Therefore (x-4) is a factor.

Step 3

Exam Tip

(x-2+2x-24=(x-4)(x+6)) है। इसलिए (x-4) एक गुणनखंड है।

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यदि (p(x)=x-2-12x+35), तो \(\frac{1}{\alpha-1}+\frac{1}{\beta-1}\) क्या है, जहाँ \(\alpha,\beta\) शून्यक हैं?

If (p(x)=x-2-12x+35), what is \(\frac{1}{\alpha-1}+\frac{1}{\beta-1}\), where \(\alpha,\beta\) are zeroes?

Explanation opens after your attempt
Correct Answer

D. \(\frac{11}{24}\)

Step 1

Concept

\(\alpha+\beta=12\) and \(\alpha\beta=35\). \(\frac{1}{\alpha-1}+\frac{1}{\beta-1}=\frac{\alpha+\beta-2}{\alpha\beta-\alpha-\beta+1}=\frac{10}{24}=\frac{5}{12}\).

Step 2

Why this answer is correct

The correct answer is D. \(\frac{11}{24}\). \(\alpha+\beta=12\) and \(\alpha\beta=35\). \(\frac{1}{\alpha-1}+\frac{1}{\beta-1}=\frac{\alpha+\beta-2}{\alpha\beta-\alpha-\beta+1}=\frac{10}{24}=\frac{5}{12}\).

Step 3

Exam Tip

\(\alpha+\beta=12\) और \(\alpha\beta=35\) हैं। \(\frac{1}{\alpha-1}+\frac{1}{\beta-1}=\frac{\alpha+\beta-2}{\alpha\beta-\alpha-\beta+1}=\frac{10}{24}=\frac{5}{12}\)।

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यदि (p(x)=x-3+px-2+qx+15) के शून्यक (-1,3,-5) हैं, तो (p+q) क्या है?

If the zeroes of (p(x)=x-3+px-2+qx+15) are (-1,3,-5), what is (p+q)?

Explanation opens after your attempt
Correct Answer

B. (2)

Step 1

Concept

The sum of zeroes is (-3), so (p=3). The pairwise product sum is (-3+5-15=-13), so (q=-13) and (p+q=-10).

Step 2

Why this answer is correct

The correct answer is B. (2). The sum of zeroes is (-3), so (p=3). The pairwise product sum is (-3+5-15=-13), so (q=-13) and (p+q=-10).

Step 3

Exam Tip

शून्यकों का योग (-3) है, इसलिए (p=3)। युग्म गुणनफलों का योग (-3+5-15=-13), इसलिए (q=-13) और (p+q=-10)।

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यदि (p(x)=x-2+4x+4), तो (p(-2+h)) का मान क्या है?

If (p(x)=x-2+4x+4), what is the value of (p(-2+h))?

Explanation opens after your attempt
Correct Answer

A. \(h^2\)

Step 1

Concept

(p(x)=(x+2)2), so (p(-2+h)=h-2). Perfect square form makes substitution easier.

Step 2

Why this answer is correct

The correct answer is A. \(h^2\). (p(x)=(x+2)2), so (p(-2+h)=h-2). Perfect square form makes substitution easier.

Step 3

Exam Tip

(p(x)=(x+2)2), इसलिए (p(-2+h)=h-2)। पूर्ण वर्ग रूप से प्रतिस्थापन आसान हो जाता है।

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यदि (x=2) पर (p(x)=x-3+mx-10) का मान (0) है, तो (m) क्या है?

If the value of (p(x)=x-3+mx-10) at (x=2) is (0), what is (m)?

Explanation opens after your attempt
Correct Answer

A. (1)

Step 1

Concept

(p(2)=8+2m-10=0). This gives (2m=2) and (m=1).

Step 2

Why this answer is correct

The correct answer is A. (1). (p(2)=8+2m-10=0). This gives (2m=2) and (m=1).

Step 3

Exam Tip

(p(2)=8+2m-10=0) है। इससे (2m=2) और (m=1) मिलता है।

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यदि (p(x)=2x-2-7x+5), तो शून्यकों के योग और गुणनफल का अंतर क्या है?

If (p(x)=2x-2-7x+5), what is the difference between the sum and product of its zeroes?

Explanation opens after your attempt
Correct Answer

A. (1)

Step 1

Concept

The sum is \(\frac{7}{2}\) and the product is \(\frac{5}{2}\). Their difference is \(\frac{7}{2}-\frac{5}{2}=1\).

Step 2

Why this answer is correct

The correct answer is A. (1). The sum is \(\frac{7}{2}\) and the product is \(\frac{5}{2}\). Their difference is \(\frac{7}{2}-\frac{5}{2}=1\).

Step 3

Exam Tip

योग \(\frac{7}{2}\) और गुणनफल \(\frac{5}{2}\) है। उनका अंतर \(\frac{7}{2}-\frac{5}{2}=1\) है।

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यदि (p(x)=x-2-kx+36) के शून्यक धनात्मक और अनुपात (1:4) में हैं, तो (k) क्या है?

If the zeroes of (p(x)=x-2-kx+36) are positive and in the ratio (1:4), what is (k)?

Explanation opens after your attempt
Correct Answer

A. (15)

Step 1

Concept

Let the zeroes be (t) and (4t), then \(4t^2=36\) gives (t=3). The sum is (15), so (k=15).

Step 2

Why this answer is correct

The correct answer is A. (15). Let the zeroes be (t) and (4t), then \(4t^2=36\) gives (t=3). The sum is (15), so (k=15).

Step 3

Exam Tip

शून्यक (t) और (4t) मानें, तो \(4t^2=36\) से (t=3) है। योग (15) है, इसलिए (k=15)।

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यदि (p(x)=ax-2+bx+c) और (p(1)=p(2)=p(3)=0), तो कौन-सा निष्कर्ष सही है?

If (p(x)=ax-2+bx+c) and (p(1)=p(2)=p(3)=0), which conclusion is correct?

Explanation opens after your attempt
Correct Answer

A. (p(x)) शून्य बहुपद है(p(x)) is the zero polynomial

Step 1

Concept

A polynomial of degree at most (2) can have three distinct zeroes only if it is the zero polynomial. A non-zero polynomial cannot have more distinct zeroes than its degree.

Step 2

Why this answer is correct

The correct answer is A. (p(x)) शून्य बहुपद है / (p(x)) is the zero polynomial. A polynomial of degree at most (2) can have three distinct zeroes only if it is the zero polynomial. A non-zero polynomial cannot have more distinct zeroes than its degree.

Step 3

Exam Tip

अधिकतम द्विघात बहुपद के तीन अलग-अलग शून्यक तभी हो सकते हैं जब वह शून्य बहुपद हो। घात से अधिक अलग शून्यक असंभव होते हैं।

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यदि (p(x)=x-2-5x+6), तो (p(2)+p(3)) का मान क्या है?

If (p(x)=x-2-5x+6), what is the value of (p(2)+p(3))?

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

(2) and (3) are zeroes of (p(x)), so (p(2)=0) and (p(3)=0). Hence the sum is (0).

Step 2

Why this answer is correct

The correct answer is A. (0). (2) and (3) are zeroes of (p(x)), so (p(2)=0) and (p(3)=0). Hence the sum is (0).

Step 3

Exam Tip

(2) और (3), (p(x)) के शून्यक हैं, इसलिए (p(2)=0) और (p(3)=0)। इसलिए योग (0) है।

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यदि (p(x)=x-2-2x-8), तो (p(x+3)) के शून्यक कौन-से हैं?

If (p(x)=x-2-2x-8), what are the zeroes of (p(x+3))?

Explanation opens after your attempt
Correct Answer

A. -(5,1)

Step 1

Concept

The zeroes of (p(x)) are (4) and (-2). From (x+3=4) or (x+3=-2), the zeroes are (1) and (-5).

Step 2

Why this answer is correct

The correct answer is A. -(5,1). The zeroes of (p(x)) are (4) and (-2). From (x+3=4) or (x+3=-2), the zeroes are (1) and (-5).

Step 3

Exam Tip

(p(x)) के शून्यक (4) और (-2) हैं। (x+3=4) या (x+3=-2) से शून्यक (1) और (-5) मिलते हैं।

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यदि (p(x)=x-3-9x), तो इसके कितने भिन्न वास्तविक शून्यक हैं?

If (p(x)=x-3-9x), how many distinct real zeroes does it have?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

(x-3-9x=x(x-3)(x+3)), so the zeroes are (-3,0,3). Hence there are (3) distinct real zeroes.

Step 2

Why this answer is correct

The correct answer is A. (3). (x-3-9x=x(x-3)(x+3)), so the zeroes are (-3,0,3). Hence there are (3) distinct real zeroes.

Step 3

Exam Tip

(x-3-9x=x(x-3)(x+3)), इसलिए शून्यक (-3,0,3) हैं। अतः भिन्न वास्तविक शून्यक (3) हैं।

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यदि (p(x)=x-3+ax-2+bx-12) के शून्यक (1,3,-4) हैं, तो (a+b) क्या है?

If the zeroes of (p(x)=x-3+ax-2+bx-12) are (1,3,-4), what is (a+b)?

Explanation opens after your attempt
Correct Answer

A. -(9)

Step 1

Concept

The sum (1+3-4=0), so (a=0). The sum of pairwise products is (3-4-12=-13), so (b=-13) and (a+b=-13).

Step 2

Why this answer is correct

The correct answer is A. -(9). The sum (1+3-4=0), so (a=0). The sum of pairwise products is (3-4-12=-13), so (b=-13) and (a+b=-13).

Step 3

Exam Tip

योग (1+3-4=0) है, इसलिए (a=0)। युग्म गुणनफलों का योग (3-4-12=-13), इसलिए (b=-13) और (a+b=-13)।

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यदि (p(x)=x-4-5x-2+4), तो इसके वास्तविक शून्यक कौन-से हैं?

If (p(x)=x-4-5x-2+4), what are its real zeroes?

Explanation opens after your attempt
Correct Answer

A. -(2,-1,1,2)

Step 1

Concept

(x-4-5x-2+4=\(x^2-1\)\(x^2-4\)). Therefore the real zeroes are (-2,-1,1,2).

Step 2

Why this answer is correct

The correct answer is A. -(2,-1,1,2). (x-4-5x-2+4=\(x^2-1\)\(x^2-4\)). Therefore the real zeroes are (-2,-1,1,2).

Step 3

Exam Tip

(x-4-5x-2+4=\(x^2-1\)\(x^2-4\)) है। इसलिए वास्तविक शून्यक (-2,-1,1,2) हैं।

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यदि (p(x)=4x-2-4x+1), तो इसके शून्यक क्या हैं?

If (p(x)=4x-2-4x+1), what are its zeroes?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{2},\frac{1}{2}\)

Step 1

Concept

(4x-2-4x+1=(2x-1)2), so the zero \(\frac{1}{2}\) occurs twice. Perfect square form gives equal zeroes directly.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{1}{2},\frac{1}{2}\). (4x-2-4x+1=(2x-1)2), so the zero \(\frac{1}{2}\) occurs twice. Perfect square form gives equal zeroes directly.

Step 3

Exam Tip

(4x-2-4x+1=(2x-1)2), इसलिए शून्यक \(\frac{1}{2}\) दो बार है। पूर्ण वर्ग रूप तुरंत समान शून्यक देता है।

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यदि (p(x)=2x-2+mx+18) का एक शून्यक (3) है, तो दूसरा शून्यक क्या है?

If one zero of (p(x)=2x-2+mx+18) is (3), what is the other zero?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

The product is \(\frac{18}{2}=9\). Since one zero is (3), the other is (3).

Step 2

Why this answer is correct

The correct answer is A. (3). The product is \(\frac{18}{2}=9\). Since one zero is (3), the other is (3).

Step 3

Exam Tip

गुणनफल \(\frac{18}{2}=9\) है। एक शून्यक (3) है, इसलिए दूसरा (3) होगा।

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यदि (p(x)=x-2-3x-28), तो (p(x)) के शून्यकों के मध्य दूरी क्या है?

If (p(x)=x-2-3x-28), what is the distance between its zeroes?

Explanation opens after your attempt
Correct Answer

A. (11)

Step 1

Concept

(p(x)=(x-7)(x+4)), so the zeroes are (7) and (-4). The distance is (|7-(-4)|=11).

Step 2

Why this answer is correct

The correct answer is A. (11). (p(x)=(x-7)(x+4)), so the zeroes are (7) and (-4). The distance is (|7-(-4)|=11).

Step 3

Exam Tip

(p(x)=(x-7)(x+4)), इसलिए शून्यक (7) और (-4) हैं। दूरी (|7-(-4)|=11) है।

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यदि (p(x)=x-2-11x+30) और (q(x)=p(x-2)), तो (q(x)) के शून्यक कौन-से हैं?

If (p(x)=x-2-11x+30) and (q(x)=p(x-2)), what are the zeroes of (q(x))?

Explanation opens after your attempt
Correct Answer

A. (7,8)

Step 1

Concept

The zeroes of (p(x)) are (5) and (6). For (p(x-2)=0), (x-2=5) or (x-2=6), so the zeroes are (7,8).

Step 2

Why this answer is correct

The correct answer is A. (7,8). The zeroes of (p(x)) are (5) and (6). For (p(x-2)=0), (x-2=5) or (x-2=6), so the zeroes are (7,8).

Step 3

Exam Tip

(p(x)) के शून्यक (5) और (6) हैं। (p(x-2)=0) के लिए (x-2=5) या (x-2=6), इसलिए शून्यक (7,8) हैं।

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यदि (p(x)=x-2+bx+16) के शून्यक परस्पर व्युत्क्रम हैं, तो (b) के बारे में क्या कहा जा सकता है?

If the zeroes of (p(x)=x-2+bx+16) are reciprocals of each other, what can be said about (b)?

Explanation opens after your attempt
Correct Answer

A. ऐसा संभव नहीं हैIt is not possible

Step 1

Concept

Reciprocal zeroes must have product (1). Here the product is (16), so it is not possible.

Step 2

Why this answer is correct

The correct answer is A. ऐसा संभव नहीं है / It is not possible. Reciprocal zeroes must have product (1). Here the product is (16), so it is not possible.

Step 3

Exam Tip

परस्पर व्युत्क्रम शून्यकों का गुणनफल (1) होना चाहिए। यहाँ गुणनफल (16) है, इसलिए यह संभव नहीं है।

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यदि (p(x)=3x-2-12x+15), तो वास्तविक शून्यकों के बारे में सही निष्कर्ष क्या है?

For (p(x)=3x-2-12x+15), what is the correct conclusion about real zeroes?

Explanation opens after your attempt
Correct Answer

A. कोई वास्तविक शून्यक नहींNo real zeroes

Step 1

Concept

(p(x)=3\(x^2-4x+5\)=3((x-2)2+1)), which is always positive. Hence there are no real zeroes.

Step 2

Why this answer is correct

The correct answer is A. कोई वास्तविक शून्यक नहीं / No real zeroes. (p(x)=3\(x^2-4x+5\)=3((x-2)2+1)), which is always positive. Hence there are no real zeroes.

Step 3

Exam Tip

(p(x)=3\(x^2-4x+5\)=3((x-2)2+1)), जो सदा धनात्मक है। इसलिए कोई वास्तविक शून्यक नहीं है।

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यदि (p(x)=x-3-6x-2+12x-8), तो (p(x)) का शून्यक किस गुणनता के साथ है?

If (p(x)=x-3-6x-2+12x-8), what is the zero of (p(x)) with its multiplicity?

Explanation opens after your attempt
Correct Answer

A. (2) गुणनता (3)(2) with multiplicity (3)

Step 1

Concept

This is (p(x)=(x-2)3), so (2) is a zero three times. Recognizing cube identities is useful.

Step 2

Why this answer is correct

The correct answer is A. (2) गुणनता (3) / (2) with multiplicity (3). This is (p(x)=(x-2)3), so (2) is a zero three times. Recognizing cube identities is useful.

Step 3

Exam Tip

यह (p(x)=(x-2)3) है, इसलिए (2) तीन बार शून्यक है। घन पूर्ण पहचान को पहचानना उपयोगी है।

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यदि किसी द्विघात बहुपद के शून्यक \(2+\sqrt{3}\) और \(2-\sqrt{3}\) हैं, तो मोनिक बहुपद कौन-सा है?

If the zeroes of a quadratic polynomial are \(2+\sqrt{3}\) and \(2-\sqrt{3}\), which is the monic polynomial?

Explanation opens after your attempt
Correct Answer

A. \(x^2-4x+1\)

Step 1

Concept

The sum is (4) and the product is (1). Therefore the monic polynomial is \(x^2-4x+1\).

Step 2

Why this answer is correct

The correct answer is A. \(x^2-4x+1\). The sum is (4) and the product is (1). Therefore the monic polynomial is \(x^2-4x+1\).

Step 3

Exam Tip

योग (4) और गुणनफल (1) है। अतः मोनिक बहुपद \(x^2-4x+1\) होगा।

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यदि (p(x)=x-2-4x+1), तो शून्यकों के व्युत्क्रमों का योग क्या है?

If (p(x)=x-2-4x+1), what is the sum of reciprocals of its zeroes?

Explanation opens after your attempt
Correct Answer

A. (4)

Step 1

Concept

The sum of reciprocals is \(\frac{\alpha+\beta}{\alpha\beta}\). Here \(\alpha+\beta=4\) and \(\alpha\beta=1\), so the answer is (4).

Step 2

Why this answer is correct

The correct answer is A. (4). The sum of reciprocals is \(\frac{\alpha+\beta}{\alpha\beta}\). Here \(\alpha+\beta=4\) and \(\alpha\beta=1\), so the answer is (4).

Step 3

Exam Tip

शून्यकों के व्युत्क्रमों का योग \(\frac{\alpha+\beta}{\alpha\beta}\) होता है। यहाँ \(\alpha+\beta=4\) और \(\alpha\beta=1\), इसलिए उत्तर (4) है।

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यदि \(\alpha,\beta\), \(x^2-9x+20\) के शून्यक हैं, तो (\(\alpha+2\)\(\beta+2\)) का मान क्या है?

If \(\alpha,\beta\) are zeroes of \(x^2-9x+20\), what is the value of (\(\alpha+2\)\(\beta+2\))?

Explanation opens after your attempt
Correct Answer

A. (42)

Step 1

Concept

\(\alpha+\beta=9\) and \(\alpha\beta=20\). (\(\alpha+2\)\(\beta+2\)=\alpha\beta+2\(\alpha+\beta\)+4=20+18+4=42).

Step 2

Why this answer is correct

The correct answer is A. (42). \(\alpha+\beta=9\) and \(\alpha\beta=20\). (\(\alpha+2\)\(\beta+2\)=\alpha\beta+2\(\alpha+\beta\)+4=20+18+4=42).

Step 3

Exam Tip

\(\alpha+\beta=9\) और \(\alpha\beta=20\) हैं। (\(\alpha+2\)\(\beta+2\)=\alpha\beta+2\(\alpha+\beta\)+4=20+18+4=42)।

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यदि (p(x)=(k-3)x-5+2x-3-x+9) की घात (3) है, तो (k) क्या है?

If (p(x)=(k-3)x-5+2x-3-x+9) has degree (3), what is (k)?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

For degree (3), the coefficient of \(x^5\) must be (0). Thus (k-3=0) and (k=3).

Step 2

Why this answer is correct

The correct answer is A. (3). For degree (3), the coefficient of \(x^5\) must be (0). Thus (k-3=0) and (k=3).

Step 3

Exam Tip

घात (3) होने के लिए \(x^5\) का गुणांक (0) होना चाहिए। इसलिए (k-3=0) और (k=3)।

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यदि (p(x)=x-3-4x-2-7x+10) और (x-1) इसका गुणनखंड है, तो शेष द्विघात गुणनखंड क्या है?

If (p(x)=x-3-4x-2-7x+10) and (x-1) is a factor, what is the remaining quadratic factor?

Explanation opens after your attempt
Correct Answer

A. \(x^2-3x-10\)

Step 1

Concept

Dividing (p(x)) by (x-1) gives \(x^2-3x-10\). Verify by multiplying ((x-1)\(x^2-3x-10\)=p(x)).

Step 2

Why this answer is correct

The correct answer is A. \(x^2-3x-10\). Dividing (p(x)) by (x-1) gives \(x^2-3x-10\). Verify by multiplying ((x-1)\(x^2-3x-10\)=p(x)).

Step 3

Exam Tip

(p(x)) को (x-1) से भाग देने पर \(x^2-3x-10\) मिलता है। गुणा करके जाँचें कि ((x-1)\(x^2-3x-10\)=p(x))।

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यदि (p(x)=2x-2-5x-3), तो \(\frac{\alpha}{\beta}+\frac{\beta}{\alpha}\) क्या है, जहाँ \(\alpha,\beta\) शून्यक हैं?

If (p(x)=2x-2-5x-3), what is \(\frac{\alpha}{\beta}+\frac{\beta}{\alpha}\), where \(\alpha,\beta\) are zeroes?

Explanation opens after your attempt
Correct Answer

A. -\(\frac{37}{6}\)

Step 1

Concept

\(\alpha+\beta=\frac{5}{2}\) and \(\alpha\beta=-\frac{3}{2}\). (\frac{\alpha}{\beta}+\frac{\beta}{\alpha}=\frac{\(\alpha+\beta\)2-2\alpha\beta}{\alpha\beta}=-\frac{37}{6}).

Step 2

Why this answer is correct

The correct answer is A. -\(\frac{37}{6}\). \(\alpha+\beta=\frac{5}{2}\) and \(\alpha\beta=-\frac{3}{2}\). (\frac{\alpha}{\beta}+\frac{\beta}{\alpha}=\frac{\(\alpha+\beta\)2-2\alpha\beta}{\alpha\beta}=-\frac{37}{6}).

Step 3

Exam Tip

\(\alpha+\beta=\frac{5}{2}\) और \(\alpha\beta=-\frac{3}{2}\) हैं। (\frac{\alpha}{\beta}+\frac{\beta}{\alpha}=\frac{\(\alpha+\beta\)2-2\alpha\beta}{\alpha\beta}=-\frac{37}{6})।

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यदि (p(x)=x-2-6x+s) का एक शून्यक दूसरे से (2) अधिक है, तो (s) का मान क्या है?

If one zero of (p(x)=x-2-6x+s) is (2) more than the other, what is (s)?

Explanation opens after your attempt
Correct Answer

A. (8)

Step 1

Concept

Let the zeroes be (t) and (t+2), then (2t+2=6) gives (t=2). The product is \(2\cdot4=8\), so (s=8).

Step 2

Why this answer is correct

The correct answer is A. (8). Let the zeroes be (t) and (t+2), then (2t+2=6) gives (t=2). The product is \(2\cdot4=8\), so (s=8).

Step 3

Exam Tip

शून्यक (t) और (t+2) मानें, तो (2t+2=6) से (t=2)। गुणनफल \(2\cdot4=8\), इसलिए (s=8)।

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यदि (x=2) और (x=-3), (p(x)=ax-2+bx+c) के शून्यक हैं, तो \(\frac{c}{a}\) क्या है?

If (x=2) and (x=-3) are zeroes of (p(x)=ax-2+bx+c), what is \(\frac{c}{a}\)?

Explanation opens after your attempt
Correct Answer

A. -(6)

Step 1

Concept

The product of zeroes is (2\cdot(-3)=-6), and it equals \(\frac{c}{a}\). Pay special attention to the sign in products.

Step 2

Why this answer is correct

The correct answer is A. -(6). The product of zeroes is (2\cdot(-3)=-6), and it equals \(\frac{c}{a}\). Pay special attention to the sign in products.

Step 3

Exam Tip

शून्यकों का गुणनफल (2\cdot(-3)=-6) है और यह \(\frac{c}{a}\) के बराबर होता है। गुणनफल में संकेत पर विशेष ध्यान दें।

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यदि (p(x)=x-3-2x-2-13x-10) है, तो इनमें से कौन (p(x)) का शून्यक है?

If (p(x)=x-3-2x-2-13x-10), which of the following is a zero of (p(x))?

Explanation opens after your attempt
Correct Answer

D. -(2)

Step 1

Concept

(p(-2)=-8-8+26-10=0), so (-2) is a zero. Test small option values by direct substitution.

Step 2

Why this answer is correct

The correct answer is D. -(2). (p(-2)=-8-8+26-10=0), so (-2) is a zero. Test small option values by direct substitution.

Step 3

Exam Tip

(p(-2)=-8-8+26-10=0), इसलिए (-2) शून्यक है। विकल्पों में दिए छोटे मानों को सीधे रखकर जाँचें।

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यदि \(\alpha\) और \(\beta\), \(3x^2-10x+7\) के शून्यक हैं, तो \(\alpha^2+\beta^2\) का मान क्या है?

If \(\alpha\) and \(\beta\) are zeroes of \(3x^2-10x+7\), what is the value of \(\alpha^2+\beta^2\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{58}{9}\)

Step 1

Concept

Here \(\alpha+\beta=\frac{10}{3}\) and \(\alpha\beta=\frac{7}{3}\). Hence (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=\frac{100}{9}-\frac{14}{3}=\frac{58}{9}).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{58}{9}\). Here \(\alpha+\beta=\frac{10}{3}\) and \(\alpha\beta=\frac{7}{3}\). Hence (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=\frac{100}{9}-\frac{14}{3}=\frac{58}{9}).

Step 3

Exam Tip

यहाँ \(\alpha+\beta=\frac{10}{3}\) और \(\alpha\beta=\frac{7}{3}\) हैं। इसलिए (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=\frac{100}{9}-\frac{14}{3}=\frac{58}{9})।

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यदि (p(x)=x-2+rx+9) के दोनों शून्यक समान और ऋणात्मक हैं, तो (r) का मान क्या होगा?

If both zeroes of (p(x)=x-2+rx+9) are equal and negative, what is the value of (r)?

Explanation opens after your attempt
Correct Answer

A. (6)

Step 1

Concept

For equal zeroes, \(r^2-36=0\), so \(r=\pm6\). For negative zeroes the sum must be positive (6), hence (r=6).

Step 2

Why this answer is correct

The correct answer is A. (6). For equal zeroes, \(r^2-36=0\), so \(r=\pm6\). For negative zeroes the sum must be positive (6), hence (r=6).

Step 3

Exam Tip

समान शून्यकों के लिए \(r^2-36=0\), अतः \(r=\pm6\)। ऋणात्मक शून्यक के लिए योग धनात्मक (6) होना चाहिए, इसलिए (r=6)।

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यदि (p(x)=x-2-(m+4)x+4m) के शून्यक (4) और (m) हैं, तो कौन-सा कथन सही है?

If the zeroes of (p(x)=x-2-(m+4)x+4m) are (4) and (m), which statement is correct?

Explanation opens after your attempt
Correct Answer

A. यह हर वास्तविक (m) के लिए सही हैIt is true for every real (m)

Step 1

Concept

The sum (4+m) and product (4m) match the given polynomial. Therefore the statement is true for every real (m).

Step 2

Why this answer is correct

The correct answer is A. यह हर वास्तविक (m) के लिए सही है / It is true for every real (m). The sum (4+m) and product (4m) match the given polynomial. Therefore the statement is true for every real (m).

Step 3

Exam Tip

योग (4+m) और गुणनफल (4m) हैं, जो दिए बहुपद से मिलते हैं। इसलिए कथन हर वास्तविक (m) के लिए सही है।

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