Search Class 10 Questions

21 results found for "non-real" in Class 10.

Question Expert Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि (p(x)=x-2-2x-2), तो \(1+\sqrt{3}\) के बारे में कौन सा कथन सही है?

If (p(x)=x-2-2x-2), which statement about \(1+\sqrt{3}\) is correct?

Explanation opens after your attempt
Correct Answer

A. यह (p(x)) का शून्यक हैIt is a zero of (p(x))

Step 1

Concept

Since (p\(1+\sqrt{3}\)=0), \(1+\sqrt{3}\) is a zero. To prove a number is a zero, show that the polynomial value is (0).

Step 2

Why this answer is correct

The correct answer is A. यह (p(x)) का शून्यक है / It is a zero of (p(x)). Since (p\(1+\sqrt{3}\)=0), \(1+\sqrt{3}\) is a zero. To prove a number is a zero, show that the polynomial value is (0).

Step 3

Exam Tip

(p\(1+\sqrt{3}\)=0), इसलिए \(1+\sqrt{3}\) शून्यक है। किसी संख्या को शून्यक सिद्ध करने के लिए बहुपद का मान (0) दिखाएँ।

Open Question Page
Ask Friends
Question Expert Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि (p(x)=x-2-11x+24) और (q(x)=x-2-11x+23), तो कौन सा कथन सही है?

If (p(x)=x-2-11x+24) and (q(x)=x-2-11x+23), which statement is correct?

Explanation opens after your attempt
Correct Answer

A. (p(x)) के शून्यक परिमेय और (q(x)) के अपरिमेय वास्तविक हैं(p(x)) has rational zeroes and (q(x)) has irrational real zeroes

Step 1

Concept

For (p(x)), (D=121-96=25), a perfect square. For (q(x)), (D=121-92=29), positive and not a perfect square.

Step 2

Why this answer is correct

The correct answer is A. (p(x)) के शून्यक परिमेय और (q(x)) के अपरिमेय वास्तविक हैं / (p(x)) has rational zeroes and (q(x)) has irrational real zeroes. For (p(x)), (D=121-96=25), a perfect square. For (q(x)), (D=121-92=29), positive and not a perfect square.

Step 3

Exam Tip

(p(x)) के लिए (D=121-96=25) पूर्ण वर्ग है। (q(x)) के लिए (D=121-92=29) धनात्मक अपूर्ण वर्ग है।

Open Question Page
Ask Friends
Question Expert Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि (p(x)=x-2-2\sqrt{2}x+1) है, तो शून्यकों का प्रकार क्या है?

If (p(x)=x-2-2\sqrt{2}x+1), what is the type of its zeroes?

Explanation opens after your attempt
Correct Answer

A. दो भिन्न वास्तविक अपरिमेयTwo distinct real irrational

Step 1

Concept

(D=\(2\sqrt{2}\)2-4=8-4=4), and the zeroes are \(\sqrt{2}\pm1\). They are real and irrational.

Step 2

Why this answer is correct

The correct answer is A. दो भिन्न वास्तविक अपरिमेय / Two distinct real irrational. (D=\(2\sqrt{2}\)2-4=8-4=4), and the zeroes are \(\sqrt{2}\pm1\). They are real and irrational.

Step 3

Exam Tip

(D=\(2\sqrt{2}\)2-4=8-4=4) है और शून्यक \(\sqrt{2}\pm1\) हैं। ये वास्तविक और अपरिमेय हैं।

Open Question Page
Ask Friends
Question Expert Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि (p(x)=x-2-16) है, तो शून्यकों के प्रकार के बारे में सही कथन कौन सा है?

If (p(x)=x-2-16), which statement about the type of zeroes is correct?

Explanation opens after your attempt
Correct Answer

A. दोनों परिमेय वास्तविक हैंBoth are rational real

Step 1

Concept

From \(x^2-16=0\), \(x=\pm4\), which are rational real. Not every square-root type question gives irrational roots.

Step 2

Why this answer is correct

The correct answer is A. दोनों परिमेय वास्तविक हैं / Both are rational real. From \(x^2-16=0\), \(x=\pm4\), which are rational real. Not every square-root type question gives irrational roots.

Step 3

Exam Tip

\(x^2-16=0\) से \(x=\pm4\), जो परिमेय वास्तविक हैं। हर वर्गमूल वाला प्रश्न अपरिमेय नहीं होता।

Open Question Page
Ask Friends
Question Expert Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि (p(x)=x-2+2x-8) और (q(x)=x-2+2x-7) हैं, तो सही तुलना कौन सी है?

If (p(x)=x-2+2x-8) and (q(x)=x-2+2x-7), which comparison is correct?

Explanation opens after your attempt
Correct Answer

A. (p(x)) के शून्यक परिमेय हैं और (q(x)) के शून्यक अपरिमेय वास्तविक हैं(p(x)) has rational zeroes and (q(x)) has irrational real zeroes

Step 1

Concept

For (p(x)), (D=4+32=36), a perfect square. For (q(x)), (D=4+28=32), positive and not a perfect square.

Step 2

Why this answer is correct

The correct answer is A. (p(x)) के शून्यक परिमेय हैं और (q(x)) के शून्यक अपरिमेय वास्तविक हैं / (p(x)) has rational zeroes and (q(x)) has irrational real zeroes. For (p(x)), (D=4+32=36), a perfect square. For (q(x)), (D=4+28=32), positive and not a perfect square.

Step 3

Exam Tip

(p(x)) के लिए (D=4+32=36) पूर्ण वर्ग है। (q(x)) के लिए (D=4+28=32) धनात्मक अपूर्ण वर्ग है।

Open Question Page
Ask Friends
Question Expert Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा बहुपद परिमेय गुणांकों वाला है और उसके दोनों शून्यक अपरिमेय वास्तविक हैं?

Which polynomial has rational coefficients and both zeroes irrational real?

Explanation opens after your attempt
Correct Answer

A. \(x^2-8x+3\)

Step 1

Concept

For \(x^2-8x+3\), (D=64-12=52), positive and not a perfect square. The other options give equal rational, non-real, or rational zeroes.

Step 2

Why this answer is correct

The correct answer is A. \(x^2-8x+3\). For \(x^2-8x+3\), (D=64-12=52), positive and not a perfect square. The other options give equal rational, non-real, or rational zeroes.

Step 3

Exam Tip

\(x^2-8x+3\) के लिए (D=64-12=52), जो धनात्मक अपूर्ण वर्ग है। बाकी विकल्पों में शून्यक समान परिमेय, अवास्तविक या परिमेय हैं।

Open Question Page
Ask Friends
Question Expert Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि (p(x)=3x-2-18x+21) है, तो इसके शून्यक किस प्रकार के हैं?

If (p(x)=3x-2-18x+21), what type of zeroes does it have?

Explanation opens after your attempt
Correct Answer

B. वास्तविक और अपरिमेयReal and irrational

Step 1

Concept

After removing the common factor, we get \(x^2-6x+7\), and (D=36-28=8). Since (D) is positive and not a perfect square, the zeroes are real irrational.

Step 2

Why this answer is correct

The correct answer is B. वास्तविक और अपरिमेय / Real and irrational. After removing the common factor, we get \(x^2-6x+7\), and (D=36-28=8). Since (D) is positive and not a perfect square, the zeroes are real irrational.

Step 3

Exam Tip

सामान्य गुणनखंड हटाने पर \(x^2-6x+7\) मिलता है और (D=36-28=8)। (D) धनात्मक अपूर्ण वर्ग है, इसलिए शून्यक वास्तविक अपरिमेय हैं।

Open Question Page
Ask Friends
Question Expert Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि (p(x)=x-2-2ax+\(a^2-7\)) है और (a) परिमेय है, तो शून्यकों के बारे में सही कथन कौन सा है?

If (p(x)=x-2-2ax+\(a^2-7\)) and (a) is rational, which statement about the zeroes is correct?

Explanation opens after your attempt
Correct Answer

A. वे \(a+\sqrt{7}\) और \(a-\sqrt{7}\) हैंThey are \(a+\sqrt{7}\) and \(a-\sqrt{7}\)

Step 1

Concept

(p(x)=(x-a)2-7), so \(x=a\pm\sqrt{7}\). Recognizing a perfect-square form saves time in hard questions.

Step 2

Why this answer is correct

The correct answer is A. वे \(a+\sqrt{7}\) और \(a-\sqrt{7}\) हैं / They are \(a+\sqrt{7}\) and \(a-\sqrt{7}\). (p(x)=(x-a)2-7), so \(x=a\pm\sqrt{7}\). Recognizing a perfect-square form saves time in hard questions.

Step 3

Exam Tip

(p(x)=(x-a)2-7), इसलिए \(x=a\pm\sqrt{7}\) है। पूर्ण वर्ग रूप पहचानना कठिन प्रश्नों में समय बचाता है।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2-9x+14) और (q(x)=x-2-9x+15) हैं, तो शून्यकों के प्रकार के बारे में सही कथन कौन सा है?

If (p(x)=x-2-9x+14) and (q(x)=x-2-9x+15), which statement about the types of zeroes is correct?

Explanation opens after your attempt
Correct Answer

A. (p(x)) के शून्यक परिमेय हैं और (q(x)) के शून्यक अपरिमेय वास्तविक हैंZeroes of (p(x)) are rational and zeroes of (q(x)) are irrational real

Step 1

Concept

For (p(x)), (D=81-56=25), a perfect square, so the zeroes are rational. For (q(x)), (D=81-60=21), positive but not a perfect square, so the zeroes are irrational real.

Step 2

Why this answer is correct

The correct answer is A. (p(x)) के शून्यक परिमेय हैं और (q(x)) के शून्यक अपरिमेय वास्तविक हैं / Zeroes of (p(x)) are rational and zeroes of (q(x)) are irrational real. For (p(x)), (D=81-56=25), a perfect square, so the zeroes are rational. For (q(x)), (D=81-60=21), positive but not a perfect square, so the zeroes are irrational real.

Step 3

Exam Tip

(p(x)) के लिए (D=81-56=25) पूर्ण वर्ग है, इसलिए शून्यक परिमेय हैं। (q(x)) के लिए (D=81-60=21) धनात्मक अपूर्ण वर्ग है, इसलिए शून्यक अपरिमेय वास्तविक हैं।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2-2x+5) है, तो इसके शून्यक वास्तविक न होने का कारण क्या है?

If (p(x)=x-2-2x+5), what is the reason its zeroes are not real?

Explanation opens after your attempt
Correct Answer

A. (D<0)

Step 1

Concept

Here (D=4-20=-16), which is negative. A negative discriminant means there are no real zeroes.

Step 2

Why this answer is correct

The correct answer is A. (D<0). Here (D=4-20=-16), which is negative. A negative discriminant means there are no real zeroes.

Step 3

Exam Tip

यहाँ (D=4-20=-16), जो ऋणात्मक है। ऋणात्मक विविक्तकर का अर्थ वास्तविक शून्यक नहीं होते।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2-14x+45) और (q(x)=x-2-14x+43), तो कौन सा कथन सही है?

If (p(x)=x-2-14x+45) and (q(x)=x-2-14x+43), which statement is correct?

Explanation opens after your attempt
Correct Answer

A. (p(x)) के शून्यक परिमेय हैं और (q(x)) के अपरिमेय वास्तविक हैंZeroes of (p(x)) are rational and zeroes of (q(x)) are irrational real

Step 1

Concept

For (p(x)), (D=16) is a perfect square, and for (q(x)), (D=24) is positive but not a perfect square. Thus the first has rational and the second irrational real zeroes.

Step 2

Why this answer is correct

The correct answer is A. (p(x)) के शून्यक परिमेय हैं और (q(x)) के अपरिमेय वास्तविक हैं / Zeroes of (p(x)) are rational and zeroes of (q(x)) are irrational real. For (p(x)), (D=16) is a perfect square, and for (q(x)), (D=24) is positive but not a perfect square. Thus the first has rational and the second irrational real zeroes.

Step 3

Exam Tip

(p(x)) के लिए (D=16) पूर्ण वर्ग है और (q(x)) के लिए (D=24) धनात्मक अपूर्ण वर्ग है। इसलिए पहला परिमेय और दूसरा अपरिमेय वास्तविक है।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2-14x+45) और (q(x)=x-2-14x+40), तो कौन सा कथन सही है?

If (p(x)=x-2-14x+45) and (q(x)=x-2-14x+40), which statement is correct?

Explanation opens after your attempt
Correct Answer

A. (p(x)) के शून्यक परिमेय हैं और (q(x)) के अपरिमेय वास्तविक हैंZeroes of (p(x)) are rational and zeroes of (q(x)) are irrational real

Step 1

Concept

For (p(x)), (D=196-180=16), while for (q(x)), (D=196-160=36), so both are rational. Therefore the listed intended contrast is not valid.

Step 2

Why this answer is correct

The correct answer is A. (p(x)) के शून्यक परिमेय हैं और (q(x)) के अपरिमेय वास्तविक हैं / Zeroes of (p(x)) are rational and zeroes of (q(x)) are irrational real. For (p(x)), (D=196-180=16), while for (q(x)), (D=196-160=36), so both are rational. Therefore the listed intended contrast is not valid.

Step 3

Exam Tip

(p(x)) के लिए (D=196-180=16), जबकि (q(x)) के लिए (D=196-160=36) है, इसलिए दोनों परिमेय हैं। इसलिए सही कथन विकल्प में नहीं है।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि \(\alpha\) और \(\beta\) \(x^2-7x+5\) के शून्यक हैं, तो \(\alpha\) और \(\beta\) का प्रकार क्या होगा?

If \(\alpha\) and \(\beta\) are zeroes of \(x^2-7x+5\), what will be the type of \(\alpha\) and \(\beta\)?

Explanation opens after your attempt
Correct Answer

A. दोनों अपरिमेय वास्तविकBoth irrational real

Step 1

Concept

(D=49-20=29) is positive and not a perfect square. Therefore both zeroes are irrational real.

Step 2

Why this answer is correct

The correct answer is A. दोनों अपरिमेय वास्तविक / Both irrational real. (D=49-20=29) is positive and not a perfect square. Therefore both zeroes are irrational real.

Step 3

Exam Tip

(D=49-20=29) धनात्मक और पूर्ण वर्ग नहीं है। इसलिए दोनों शून्यक अपरिमेय वास्तविक होंगे।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2+6x+6) है, तो उसके शून्यकों का सही वर्गीकरण क्या है?

If (p(x)=x-2+6x+6), what is the correct classification of its zeroes?

Explanation opens after your attempt
Correct Answer

A. वास्तविक और अपरिमेयReal and irrational

Step 1

Concept

(D=36-24=12), which is positive but not a perfect square. Hence the zeroes are real and irrational.

Step 2

Why this answer is correct

The correct answer is A. वास्तविक और अपरिमेय / Real and irrational. (D=36-24=12), which is positive but not a perfect square. Hence the zeroes are real and irrational.

Step 3

Exam Tip

(D=36-24=12) है, जो धनात्मक है पर पूर्ण वर्ग नहीं है। इसलिए शून्यक वास्तविक और अपरिमेय हैं।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2-8x+7) है, तो इसके शून्यकों की तुलना \(x^2-8x+10\) से कैसे होगी?

If (p(x)=x-2-8x+7), how do its zeroes compare with those of \(x^2-8x+10\)?

Explanation opens after your attempt
Correct Answer

A. पहले के परिमेय, दूसरे के अपरिमेय वास्तविकFirst are rational, second are irrational real

Step 1

Concept

For the first, (D=64-28=36) is a perfect square; for the second, (D=64-40=24) is not. The discriminant quickly tells the type of zeroes.

Step 2

Why this answer is correct

The correct answer is A. पहले के परिमेय, दूसरे के अपरिमेय वास्तविक / First are rational, second are irrational real. For the first, (D=64-28=36) is a perfect square; for the second, (D=64-40=24) is not. The discriminant quickly tells the type of zeroes.

Step 3

Exam Tip

पहले में (D=64-28=36) पूर्ण वर्ग है, दूसरे में (D=64-40=24) पूर्ण वर्ग नहीं है। विविक्तकर से शून्यकों का प्रकार तुरंत पता चलता है।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2+4x+1) है, तो इसके शून्यकों का योग और प्रकार क्या है?

If (p(x)=x-2+4x+1), what are the sum and type of its zeroes?

Explanation opens after your attempt
Correct Answer

A. योग (-4), दोनों अपरिमेय वास्तविकSum (-4), both irrational real

Step 1

Concept

The sum is \(-\frac{b}{a}=-4\) and (D=16-4=12), not a perfect square. Hence both zeroes are irrational real.

Step 2

Why this answer is correct

The correct answer is A. योग (-4), दोनों अपरिमेय वास्तविक / Sum (-4), both irrational real. The sum is \(-\frac{b}{a}=-4\) and (D=16-4=12), not a perfect square. Hence both zeroes are irrational real.

Step 3

Exam Tip

योग \(-\frac{b}{a}=-4\) और (D=16-4=12) है, जो पूर्ण वर्ग नहीं है। इसलिए दोनों शून्यक अपरिमेय वास्तविक हैं।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2-10x+1) है, तो शून्यकों का गुणनफल किस प्रकार की संख्या है?

If (p(x)=x-2-10x+1), what type of number is the product of its zeroes?

Explanation opens after your attempt
Correct Answer

B. परिमेयRational

Step 1

Concept

The product is \(\frac{c}{a}=\frac{1}{1}=1\), which is rational. Zeroes may be irrational but their product can be rational.

Step 2

Why this answer is correct

The correct answer is B. परिमेय / Rational. The product is \(\frac{c}{a}=\frac{1}{1}=1\), which is rational. Zeroes may be irrational but their product can be rational.

Step 3

Exam Tip

गुणनफल \(\frac{c}{a}=\frac{1}{1}=1\) है, जो परिमेय है। शून्यक अपरिमेय हो सकते हैं पर उनका गुणनफल परिमेय हो सकता है।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2-6x+4) है, तो इसके शून्यक किस प्रकार के हैं?

If (p(x)=x-2-6x+4), what type of zeroes does it have?

Explanation opens after your attempt
Correct Answer

A. दो भिन्न अपरिमेय वास्तविक शून्यकTwo distinct irrational real zeroes

Step 1

Concept

The discriminant is (D=36-16=20), so the zeroes are \(3\pm\sqrt{5}\). If (D) is not a perfect square, real zeroes can be irrational.

Step 2

Why this answer is correct

The correct answer is A. दो भिन्न अपरिमेय वास्तविक शून्यक / Two distinct irrational real zeroes. The discriminant is (D=36-16=20), so the zeroes are \(3\pm\sqrt{5}\). If (D) is not a perfect square, real zeroes can be irrational.

Step 3

Exam Tip

विविक्तकर (D=36-16=20) है, इसलिए शून्यक \(3\pm\sqrt{5}\) हैं। (D) पूर्ण वर्ग न हो तो वास्तविक शून्यक अपरिमेय हो सकते हैं।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि किसी द्विघात बहुपद के शून्यक \(3+\sqrt{5}\) और \(3-\sqrt{5}\) हैं, तो उनके योग का प्रकार क्या है?

If the zeroes of a quadratic polynomial are \(3+\sqrt{5}\) and \(3-\sqrt{5}\), what is the type of their sum?

Explanation opens after your attempt
Correct Answer

B. परिमेय संख्याRational number

Step 1

Concept

The sum is \(3+\sqrt{5}+3-\sqrt{5}=6\), which is rational. Conjugate irrational numbers often have a rational sum.

Step 2

Why this answer is correct

The correct answer is B. परिमेय संख्या / Rational number. The sum is \(3+\sqrt{5}+3-\sqrt{5}=6\), which is rational. Conjugate irrational numbers often have a rational sum.

Step 3

Exam Tip

योग \(3+\sqrt{5}+3-\sqrt{5}=6\) है, जो परिमेय है। संयुग्मी अपरिमेय संख्याओं का योग अक्सर परिमेय होता है।

Open Question Page
Ask Friends
Question Hard Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि (p(x)=x-2-2) है, तो (p(x)) के शून्यकों के बारे में सही कथन कौन सा है?

If (p(x)=x-2-2), which statement about the zeroes of (p(x)) is correct?

Explanation opens after your attempt
Correct Answer

B. दोनों अपरिमेय वास्तविक हैंBoth are irrational real

Step 1

Concept

From \(x^2-2=0\), \(x=\pm\sqrt{2}\), which are irrational real numbers. In exams, check both real nature and rationality of roots.

Step 2

Why this answer is correct

The correct answer is B. दोनों अपरिमेय वास्तविक हैं / Both are irrational real. From \(x^2-2=0\), \(x=\pm\sqrt{2}\), which are irrational real numbers. In exams, check both real nature and rationality of roots.

Step 3

Exam Tip

\(x^2-2=0\) से \(x=\pm\sqrt{2}\), जो अपरिमेय वास्तविक संख्याएँ हैं। परीक्षा में मूल निकालते समय वास्तविकता और परिमेयता दोनों जाँचें।

Open Question Page
Ask Friends
Question Easy Mathematics Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सी संख्या वास्तविक संख्या नहीं है?

Which number is not a real number?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{-4}\)

Step 1

Concept

In Class 10 real numbers the square root of a negative number is not real. Note that \(\sqrt{7}\) is real irrational.

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{-4}\). In Class 10 real numbers the square root of a negative number is not real. Note that \(\sqrt{7}\) is real irrational.

Step 3

Exam Tip

कक्षा 10 के वास्तविक संख्याओं में ऋणात्मक संख्या की वर्गमूल वास्तविक नहीं मानी जाती। ध्यान दें \(\sqrt{7}\) वास्तविक अपरिमेय है।

Open Question Page
Ask Friends
Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.