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74 results found for "cancellation" in Class 10.

(p(x)=6x-5-4x-2+1) और (q(x)=-6x-5+3x-4+x-9) के योग की घात क्या है?

What is the degree of the sum of (p(x)=6x-5-4x-2+1) and (q(x)=-6x-5+3x-4+x-9)?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

The \(x^5\)-terms cancel and the highest remaining power is (4). Recheck the degree of the polynomial after addition.

Step 2

Why this answer is correct

The correct answer is C. (4). The \(x^5\)-terms cancel and the highest remaining power is (4). Recheck the degree of the polynomial after addition.

Step 3

Exam Tip

\(x^5\) के पद कट जाते हैं और सबसे बड़ी बची घात (4) है। जोड़ के बाद बहुपद की घात फिर से जांचें।

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(p(x)=5x-4-2x-2+1) और (q(x)=-5x-4+3x-3+x-6) के योग की घात क्या है?

What is the degree of the sum of (p(x)=5x-4-2x-2+1) and (q(x)=-5x-4+3x-3+x-6)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

The \(x^4\)-terms cancel and the highest remaining power is (3). Recheck the degree after addition.

Step 2

Why this answer is correct

The correct answer is C. (3). The \(x^4\)-terms cancel and the highest remaining power is (3). Recheck the degree after addition.

Step 3

Exam Tip

\(x^4\) के पद कट जाते हैं और सबसे बड़ी बची घात (3) है। जोड़ के बाद घात दोबारा जांचना जरूरी है।

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(p(x)=4x-4-3x-2+2) और (q(x)=-4x-4+5x-3+x-8) के योग की घात क्या है?

What is the degree of the sum of (p(x)=4x-4-3x-2+2) and (q(x)=-4x-4+5x-3+x-8)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

The \(x^4\)-terms cancel and the highest remaining power is (3). Recheck the degree after addition.

Step 2

Why this answer is correct

The correct answer is C. (3). The \(x^4\)-terms cancel and the highest remaining power is (3). Recheck the degree after addition.

Step 3

Exam Tip

\(x^4\) के पद कट जाते हैं और सबसे बड़ी बची घात (3) है। जोड़ के बाद घात फिर से जांचें।

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\(\frac{385}{2^3\cdot5\cdot7\cdot11}\) को सरलतम रूप में लिखने पर दशमलव प्रसार कैसा होगा?

When \(\frac{385}{2^3\cdot5\cdot7\cdot11}\) is written in lowest form, what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

A. समाप्त दशमलवTerminating decimal

Step 1

Concept

After cancelling \(385=5\cdot7\cdot11\), only \(2^3\) remains in the denominator. In exams always check the denominator in lowest form.

Step 2

Why this answer is correct

The correct answer is A. समाप्त दशमलव / Terminating decimal. After cancelling \(385=5\cdot7\cdot11\), only \(2^3\) remains in the denominator. In exams always check the denominator in lowest form.

Step 3

Exam Tip

\(385=5\cdot7\cdot11\) कटने के बाद हर में केवल \(2^3\) बचता है। परीक्षा में हमेशा सरलतम रूप के हर को देखें।

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यदि \(\frac{231}{2\cdot3\cdot5^2\cdot7\cdot11}\) को सरलतम रूप में लिखा जाए, तो दशमलव प्रसार कैसा होगा?

If \(\frac{231}{2\cdot3\cdot5^2\cdot7\cdot11}\) is written in lowest form, what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

A. समाप्तTerminating

Step 1

Concept

After cancelling \(231=3\cdot7\cdot11\), the denominator left is \(2\cdot5^2\). Therefore the decimal terminates.

Step 2

Why this answer is correct

The correct answer is A. समाप्त / Terminating. After cancelling \(231=3\cdot7\cdot11\), the denominator left is \(2\cdot5^2\). Therefore the decimal terminates.

Step 3

Exam Tip

\(231=3\cdot7\cdot11\) कटने के बाद हर में \(2\cdot5^2\) बचता है। इसलिए दशमलव समाप्त होगा।

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\(\frac{750}{2^6\cdot 3\cdot 5^5}\) को सरलतम रूप में लिखने के बाद दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After reducing \(\frac{750}{2^6\cdot 3\cdot 5^5}\) to lowest form, after how many decimal places will its decimal expansion terminate?

Explanation opens after your attempt
Correct Answer

C. (5) स्थान(5) places

Step 1

Concept

Since \(750=2\cdot 3\cdot 5^3\), the reduced denominator is \(2^5\cdot 5^2\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 2

Why this answer is correct

The correct answer is C. (5) स्थान / (5) places. Since \(750=2\cdot 3\cdot 5^3\), the reduced denominator is \(2^5\cdot 5^2\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 3

Exam Tip

\(750=2\cdot 3\cdot 5^3\) कटने पर हर \(2^5\cdot 5^2\) बचता है। बड़ी घात (5) है, इसलिए दशमलव (5) स्थानों पर समाप्त होगा।

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\(\frac{2^5\cdot 17}{2^9\cdot 5^2\cdot 17^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{2^5\cdot 17}{2^9\cdot 5^2\cdot 17^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

After cancellation, the denominator becomes \(2^4\cdot 5^2\cdot 17\). Since (17) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. After cancellation, the denominator becomes \(2^4\cdot 5^2\cdot 17\). Since (17) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

कटौती के बाद हर \(2^4\cdot 5^2\cdot 17\) बचेगा। (17) बचने से दशमलव असांत आवर्ती होगा।

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किस भिन्न का दशमलव सांत है पर दिए गए हर में (31) भी दिखाई देता है?

Which fraction has a terminating decimal even though the given denominator contains (31)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{62}{2^4\cdot 5^3\cdot 31}\)

Step 1

Concept

Since \(62=2\cdot 31\), the factor (31) cancels and the reduced denominator is \(2^3\cdot 5^3\). If an extra prime appears, check cancellation first.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{62}{2^4\cdot 5^3\cdot 31}\). Since \(62=2\cdot 31\), the factor (31) cancels and the reduced denominator is \(2^3\cdot 5^3\). If an extra prime appears, check cancellation first.

Step 3

Exam Tip

\(62=2\cdot 31\) है इसलिए (31) कट जाता है और सरल हर \(2^3\cdot 5^3\) बचता है। अतिरिक्त अभाज्य गुणनखंड दिखे तो पहले कटौती देखें।

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\(\frac{320}{2^7\cdot 5^3\cdot 11}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{320}{2^7\cdot 5^3\cdot 11}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

Since \(320=2^6\cdot 5\), the reduced denominator is \(2\cdot 5^2\cdot 11\). Since (11) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. Since \(320=2^6\cdot 5\), the reduced denominator is \(2\cdot 5^2\cdot 11\). Since (11) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

\(320=2^6\cdot 5\) कटने पर हर \(2\cdot 5^2\cdot 11\) बचेगा। (11) बचने से दशमलव असांत आवर्ती होगा।

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\(\frac{243}{2^5\cdot 3^5\cdot 5^4}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{243}{2^5\cdot 3^5\cdot 5^4}\) terminate?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

Since \(243=3^5\), the reduced denominator is \(2^5\cdot 5^4\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 2

Why this answer is correct

The correct answer is B. (5). Since \(243=3^5\), the reduced denominator is \(2^5\cdot 5^4\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 3

Exam Tip

\(243=3^5\) कटने पर हर \(2^5\cdot 5^4\) बचेगा। बड़ी घात (5) है इसलिए दशमलव (5) स्थानों पर समाप्त होगा।

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\(\frac{22}{2^2\cdot 5^4\cdot 11^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{22}{2^2\cdot 5^4\cdot 11^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

After cancelling \(22=2\cdot 11\), the denominator becomes \(2\cdot 5^4\cdot 11\). Since (11) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. After cancelling \(22=2\cdot 11\), the denominator becomes \(2\cdot 5^4\cdot 11\). Since (11) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

\(22=2\cdot 11\) कटने पर हर \(2\cdot 5^4\cdot 11\) बचेगा। (11) बचने से दशमलव असांत आवर्ती होगा।

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\(\frac{245}{2^2\cdot 5^2\cdot 7^3}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{245}{2^2\cdot 5^2\cdot 7^3}\) have?

Explanation opens after your attempt
Correct Answer

C. असांत आवर्तीNon-terminating recurring

Step 1

Concept

Since \(245=5\cdot 7^2\), the reduced denominator is \(2^2\cdot 5\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is C. असांत आवर्ती / Non-terminating recurring. Since \(245=5\cdot 7^2\), the reduced denominator is \(2^2\cdot 5\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

\(245=5\cdot 7^2\) कटने पर हर \(2^2\cdot 5\cdot 7\) बचता है। (7) बचने से दशमलव असांत आवर्ती होगा।

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\(\frac{2^5\cdot 5^2}{2^{10}\cdot 5^6}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{2^5\cdot 5^2}{2^{10}\cdot 5^6}\) terminate?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

After cancellation, the denominator becomes \(2^5\cdot 5^4\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 2

Why this answer is correct

The correct answer is B. (5). After cancellation, the denominator becomes \(2^5\cdot 5^4\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 3

Exam Tip

कटौती के बाद हर \(2^5\cdot 5^4\) बचेगा। बड़ी घात (5) है इसलिए दशमलव (5) स्थानों पर समाप्त होगा।

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\(\frac{3^4\cdot 5^2}{2^7\cdot 3^4\cdot 5^5}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{3^4\cdot 5^2}{2^7\cdot 3^4\cdot 5^5}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

After cancellation, the denominator becomes \(2^7\cdot 5^3\). The larger exponent is (7), so the decimal terminates after (7) places.

Step 2

Why this answer is correct

The correct answer is C. (7). After cancellation, the denominator becomes \(2^7\cdot 5^3\). The larger exponent is (7), so the decimal terminates after (7) places.

Step 3

Exam Tip

कटौती के बाद हर \(2^7\cdot 5^3\) बचेगा। बड़ी घात (7) है इसलिए दशमलव (7) स्थानों पर समाप्त होगा।

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कथन: \(\frac{169}{2^3\cdot 5^4\cdot 13^2}\) का दशमलव सांत है। कारण: सरल करने पर हर में केवल (2) और (5) बचते हैं। सही विकल्प चुनिए।

Assertion: \(\frac{169}{2^3\cdot 5^4\cdot 13^2}\) has a terminating decimal. Reason: After reducing, only (2) and (5) remain in the denominator. Choose the correct option.

Explanation opens after your attempt
Correct Answer

A. कथन और कारण दोनों सही हैं तथा कारण सही व्याख्या हैBoth are true and the reason explains it

Step 1

Concept

Since \(169=13^2\), the reduced denominator is \(2^3\cdot 5^4\). Therefore the reason correctly explains the terminating decimal rule.

Step 2

Why this answer is correct

The correct answer is A. कथन और कारण दोनों सही हैं तथा कारण सही व्याख्या है / Both are true and the reason explains it. Since \(169=13^2\), the reduced denominator is \(2^3\cdot 5^4\). Therefore the reason correctly explains the terminating decimal rule.

Step 3

Exam Tip

\(169=13^2\) कटने पर हर \(2^3\cdot 5^4\) बचता है। इसलिए कारण सांत दशमलव के नियम को सही तरह समझाता है।

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\(\frac{55}{2^2\cdot 5^3\cdot 11^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{55}{2^2\cdot 5^3\cdot 11^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

After cancelling \(55=5\cdot 11\), the denominator becomes \(2^2\cdot 5^2\cdot 11\). Since (11) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. After cancelling \(55=5\cdot 11\), the denominator becomes \(2^2\cdot 5^2\cdot 11\). Since (11) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

\(55=5\cdot 11\) कटने पर हर \(2^2\cdot 5^2\cdot 11\) बचेगा। (11) बचने से दशमलव असांत आवर्ती होगा।

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\(\frac{484}{2^4\cdot 5^3\cdot 11^2}\) को सरलतम रूप में लिखने के बाद दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After reducing \(\frac{484}{2^4\cdot 5^3\cdot 11^2}\) to lowest form, after how many decimal places will its decimal expansion terminate?

Explanation opens after your attempt
Correct Answer

B. (3) स्थान(3) places

Step 1

Concept

Since \(484=2^2\cdot 11^2\), the reduced denominator is \(2^2\cdot 5^3\). The larger exponent is (3), so reduce first and then count decimal places.

Step 2

Why this answer is correct

The correct answer is B. (3) स्थान / (3) places. Since \(484=2^2\cdot 11^2\), the reduced denominator is \(2^2\cdot 5^3\). The larger exponent is (3), so reduce first and then count decimal places.

Step 3

Exam Tip

\(484=2^2\cdot 11^2\) कटने पर हर \(2^2\cdot 5^3\) बचता है। बड़ी घात (3) है इसलिए पहले सरल करें फिर दशमलव स्थान गिनें।

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\(\frac{2^3\cdot 3^2\cdot 11}{2^6\cdot 3^3\cdot 5^4\cdot 11^2}\) को सरलतम रूप में लिखने के बाद दशमलव प्रसार कैसा होगा?

After reducing \(\frac{2^3\cdot 3^2\cdot 11}{2^6\cdot 3^3\cdot 5^4\cdot 11^2}\) to lowest form, what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

After cancellation, the denominator is \(2^3\cdot 3\cdot 5^4\cdot 11\), which contains (3) and (11). If primes other than (2) and (5) remain in the reduced denominator, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. After cancellation, the denominator is \(2^3\cdot 3\cdot 5^4\cdot 11\), which contains (3) and (11). If primes other than (2) and (5) remain in the reduced denominator, the decimal is non-terminating recurring.

Step 3

Exam Tip

कटौती के बाद हर \(2^3\cdot 3\cdot 5^4\cdot 11\) बचता है, जिसमें (3) और (11) हैं। सरलतम हर में (2) और (5) के अलावा गुणनखंड बचें तो दशमलव असांत आवर्ती होता है।

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\(\frac{2^4\cdot 13}{2^7\cdot 5^3\cdot 13^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{2^4\cdot 13}{2^7\cdot 5^3\cdot 13^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

After cancellation, the denominator becomes \(2^3\cdot 5^3\cdot 13\). Since (13) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. After cancellation, the denominator becomes \(2^3\cdot 5^3\cdot 13\). Since (13) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

कटौती के बाद हर \(2^3\cdot 5^3\cdot 13\) बचेगा। (13) बचने से दशमलव असांत आवर्ती होगा।

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किस भिन्न का दशमलव सांत है पर दिए गए हर में (29) भी दिखाई देता है?

Which fraction has a terminating decimal even though the given denominator contains (29)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{58}{2^3\cdot 5^2\cdot 29}\)

Step 1

Concept

Since \(58=2\cdot 29\), the factor (29) cancels and the reduced denominator is \(2^2\cdot 5^2\). If an extra prime appears, check cancellation first.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{58}{2^3\cdot 5^2\cdot 29}\). Since \(58=2\cdot 29\), the factor (29) cancels and the reduced denominator is \(2^2\cdot 5^2\). If an extra prime appears, check cancellation first.

Step 3

Exam Tip

\(58=2\cdot 29\) है इसलिए (29) कट जाता है और सरल हर \(2^2\cdot 5^2\) बचता है। अतिरिक्त अभाज्य गुणनखंड दिखे तो पहले कटौती देखें।

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\(\frac{200}{2^3\cdot 5^3\cdot 7}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{200}{2^3\cdot 5^3\cdot 7}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

Since \(200=2^3\cdot 5^2\), the reduced denominator is \(5\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. Since \(200=2^3\cdot 5^2\), the reduced denominator is \(5\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

\(200=2^3\cdot 5^2\) कटने पर हर \(5\cdot 7\) बचेगा। (7) बचने से दशमलव असांत आवर्ती होगा।

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\(\frac{81}{2^4\cdot 3^4\cdot 5^6}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{81}{2^4\cdot 3^4\cdot 5^6}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

Since \(81=3^4\), the reduced denominator is \(2^4\cdot 5^6\). The larger exponent is (6), so the decimal terminates after (6) places.

Step 2

Why this answer is correct

The correct answer is C. (6). Since \(81=3^4\), the reduced denominator is \(2^4\cdot 5^6\). The larger exponent is (6), so the decimal terminates after (6) places.

Step 3

Exam Tip

\(81=3^4\) कटने पर हर \(2^4\cdot 5^6\) बचेगा। बड़ी घात (6) है इसलिए दशमलव (6) स्थानों पर समाप्त होगा।

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\(\frac{14}{2^2\cdot 5^3\cdot 7^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{14}{2^2\cdot 5^3\cdot 7^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

After cancelling \(14=2\cdot 7\), the denominator becomes \(2\cdot 5^3\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. After cancelling \(14=2\cdot 7\), the denominator becomes \(2\cdot 5^3\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

\(14=2\cdot 7\) कटने पर हर \(2\cdot 5^3\cdot 7\) बचेगा। (7) बचने से दशमलव असांत आवर्ती होगा।

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\(\frac{175}{2^2\cdot 5^3\cdot 7^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{175}{2^2\cdot 5^3\cdot 7^2}\) have?

Explanation opens after your attempt
Correct Answer

C. असांत आवर्तीNon-terminating recurring

Step 1

Concept

Since \(175=5^2\cdot 7\), the reduced denominator is \(2^2\cdot 5\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is C. असांत आवर्ती / Non-terminating recurring. Since \(175=5^2\cdot 7\), the reduced denominator is \(2^2\cdot 5\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

\(175=5^2\cdot 7\) कटने पर हर \(2^2\cdot 5\cdot 7\) बचता है। (7) बचने से दशमलव असांत आवर्ती होगा।

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\(\frac{2^4\cdot 5^3}{2^9\cdot 5^5}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{2^4\cdot 5^3}{2^9\cdot 5^5}\) terminate?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

After cancellation, the denominator becomes \(2^5\cdot 5^2\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 2

Why this answer is correct

The correct answer is B. (5). After cancellation, the denominator becomes \(2^5\cdot 5^2\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 3

Exam Tip

कटौती के बाद हर \(2^5\cdot 5^2\) बचेगा। बड़ी घात (5) है इसलिए दशमलव (5) स्थानों पर समाप्त होगा।

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\(\frac{5^4\cdot 7}{2^6\cdot 5^7\cdot 7}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{5^4\cdot 7}{2^6\cdot 5^7\cdot 7}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

After cancellation, the denominator becomes \(2^6\cdot 5^3\). The larger exponent is (6), so the decimal terminates after (6) places.

Step 2

Why this answer is correct

The correct answer is C. (6). After cancellation, the denominator becomes \(2^6\cdot 5^3\). The larger exponent is (6), so the decimal terminates after (6) places.

Step 3

Exam Tip

कटौती के बाद हर \(2^6\cdot 5^3\) बचेगा। बड़ी घात (6) है इसलिए दशमलव (6) स्थानों पर समाप्त होगा।

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कथन: \(\frac{121}{2^3\cdot 5^2\cdot 11^2}\) का दशमलव सांत है। कारण: सरल करने पर हर में केवल (2) और (5) बचते हैं। सही विकल्प चुनिए।

Assertion: \(\frac{121}{2^3\cdot 5^2\cdot 11^2}\) has a terminating decimal. Reason: After reducing, only (2) and (5) remain in the denominator. Choose the correct option.

Explanation opens after your attempt
Correct Answer

A. कथन और कारण दोनों सही हैं तथा कारण सही व्याख्या हैBoth are true and the reason explains it

Step 1

Concept

Since \(121=11^2\), the reduced denominator is \(2^3\cdot 5^2\). Therefore the reason correctly explains the terminating decimal rule.

Step 2

Why this answer is correct

The correct answer is A. कथन और कारण दोनों सही हैं तथा कारण सही व्याख्या है / Both are true and the reason explains it. Since \(121=11^2\), the reduced denominator is \(2^3\cdot 5^2\). Therefore the reason correctly explains the terminating decimal rule.

Step 3

Exam Tip

\(121=11^2\) कटने पर हर \(2^3\cdot 5^2\) बचता है। इसलिए कारण सांत दशमलव के नियम को सही तरह समझाता है।

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\(\frac{147}{2\cdot 3\cdot 5^4\cdot 7^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{147}{2\cdot 3\cdot 5^4\cdot 7^2}\) have?

Explanation opens after your attempt
Correct Answer

A. सांत और (4) स्थानों पर समाप्तTerminating after (4) places

Step 1

Concept

Since \(147=3\cdot 7^2\), the reduced denominator is \(2\cdot 5^4\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 2

Why this answer is correct

The correct answer is A. सांत और (4) स्थानों पर समाप्त / Terminating after (4) places. Since \(147=3\cdot 7^2\), the reduced denominator is \(2\cdot 5^4\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 3

Exam Tip

\(147=3\cdot 7^2\) कटने पर हर \(2\cdot 5^4\) बचेगा। बड़ी घात (4) है इसलिए दशमलव (4) स्थानों पर समाप्त होगा।

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\(\frac{198}{2^2\cdot 3^2\cdot 5^5\cdot 11}\) को सरलतम रूप में लिखने के बाद दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After reducing \(\frac{198}{2^2\cdot 3^2\cdot 5^5\cdot 11}\) to lowest form, after how many decimal places will its decimal expansion terminate?

Explanation opens after your attempt
Correct Answer

C. (5) स्थान(5) places

Step 1

Concept

Since \(198=2\cdot 3^2\cdot 11\), the reduced denominator is \(2\cdot 5^5\). The larger exponent is (5), so reduce first and then count places.

Step 2

Why this answer is correct

The correct answer is C. (5) स्थान / (5) places. Since \(198=2\cdot 3^2\cdot 11\), the reduced denominator is \(2\cdot 5^5\). The larger exponent is (5), so reduce first and then count places.

Step 3

Exam Tip

\(198=2\cdot 3^2\cdot 11\) कटने पर हर \(2\cdot 5^5\) बचेगा। बड़ी घात (5) है इसलिए पहले सरल करें फिर स्थान गिनें।

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\(\frac{242}{2^3\cdot 5^4\cdot 11^2}\) को सरलतम रूप में लिखने के बाद उसका दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After reducing \(\frac{242}{2^3\cdot 5^4\cdot 11^2}\) to lowest form, after how many decimal places will its decimal expansion terminate?

Explanation opens after your attempt
Correct Answer

B. (4) स्थान(4) places

Step 1

Concept

Since \(242=2\cdot 11^2\), the reduced denominator becomes \(2^2\cdot 5^4\). The larger exponent is (4), so reduce first and then count decimal places.

Step 2

Why this answer is correct

The correct answer is B. (4) स्थान / (4) places. Since \(242=2\cdot 11^2\), the reduced denominator becomes \(2^2\cdot 5^4\). The larger exponent is (4), so reduce first and then count decimal places.

Step 3

Exam Tip

\(242=2\cdot 11^2\), इसलिए कटौती के बाद हर \(2^2\cdot 5^4\) बचेगा। बड़ी घात (4) है, इसलिए पहले सरल करें फिर दशमलव स्थान गिनें।

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\(\frac{2^5\cdot 7}{2^8\cdot 5^2\cdot 7^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{2^5\cdot 7}{2^8\cdot 5^2\cdot 7^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

After cancellation, the denominator becomes \(2^3\cdot 5^2\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. After cancellation, the denominator becomes \(2^3\cdot 5^2\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

कटौती के बाद हर \(2^3\cdot 5^2\cdot 7\) बचेगा। (7) बचने से दशमलव असांत आवर्ती होगा।

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किस भिन्न का दशमलव सांत है पर दिए गए हर में (19) भी दिखता है?

Which fraction has a terminating decimal even though the given denominator contains (19)?

Explanation opens after your attempt
Correct Answer

B. \(\frac{38}{2^2\cdot 5^3\cdot 19}\)

Step 1

Concept

Since \(38=2\cdot 19\), the factor (19) cancels and the reduced denominator is \(2\cdot 5^3\). Even if an extra prime appears, check cancellation first.

Step 2

Why this answer is correct

The correct answer is B. \(\frac{38}{2^2\cdot 5^3\cdot 19}\). Since \(38=2\cdot 19\), the factor (19) cancels and the reduced denominator is \(2\cdot 5^3\). Even if an extra prime appears, check cancellation first.

Step 3

Exam Tip

\(38=2\cdot 19\), इसलिए (19) कट जाता है और सरल हर \(2\cdot 5^3\) बचता है। अतिरिक्त अभाज्य गुणनखंड दिखे तो भी पहले कटौती देखें।

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\(\frac{72}{2^3\cdot 3^2\cdot 5^5}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{72}{2^3\cdot 3^2\cdot 5^5}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (5)

Step 1

Concept

Since \(72=2^3\cdot 3^2\), the reduced denominator is \(5^5\). The decimal terminates after (5) places.

Step 2

Why this answer is correct

The correct answer is C. (5). Since \(72=2^3\cdot 3^2\), the reduced denominator is \(5^5\). The decimal terminates after (5) places.

Step 3

Exam Tip

\(72=2^3\cdot 3^2\), इसलिए कटौती के बाद हर \(5^5\) बचता है। दशमलव (5) स्थानों पर समाप्त होगा।

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\(\frac{14}{2\cdot 5^2\cdot 7^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{14}{2\cdot 5^2\cdot 7^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

After cancelling \(14=2\cdot 7\), the denominator becomes \(5^2\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. After cancelling \(14=2\cdot 7\), the denominator becomes \(5^2\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

\(14=2\cdot 7\) कटने पर हर \(5^2\cdot 7\) बचेगा। (7) बचने से दशमलव असांत आवर्ती होगा।

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किस विकल्प में दी गई भिन्न असांत आवर्ती दशमलव देगी?

Which option will give a non-terminating recurring decimal?

Explanation opens after your attempt
Correct Answer

A. \(\frac{121}{2^2\cdot 5^3\cdot 11}\)

Step 1

Concept

In the first option, \(121=11^2\) cancels the denominator's (11), leaving only (2) and (5) in the denominator, so it terminates. No option is non-terminating here, so the options need rechecking.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{121}{2^2\cdot 5^3\cdot 11}\). In the first option, \(121=11^2\) cancels the denominator's (11), leaving only (2) and (5) in the denominator, so it terminates. No option is non-terminating here, so the options need rechecking.

Step 3

Exam Tip

पहले विकल्प में \(121=11^2\) से एक (11) कटेगा पर दूसरा (11) अंश में रहेगा और हर में केवल (2), (5) बचेंगे, इसलिए यह सांत है। सही असांत विकल्प नहीं बनता, इसलिए ऐसे प्रश्न में विकल्पों की दोबारा जाँच जरूरी है।

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\(\frac{189}{2^2\cdot 3^3\cdot 5\cdot 7}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{189}{2^2\cdot 3^3\cdot 5\cdot 7}\) have?

Explanation opens after your attempt
Correct Answer

A. सांत और (2) स्थानों पर समाप्तTerminating after (2) places

Step 1

Concept

Since \(189=3^3\cdot 7\), the reduced denominator is \(2^2\cdot 5\). The larger exponent is (2), so the decimal terminates after (2) places.

Step 2

Why this answer is correct

The correct answer is A. सांत और (2) स्थानों पर समाप्त / Terminating after (2) places. Since \(189=3^3\cdot 7\), the reduced denominator is \(2^2\cdot 5\). The larger exponent is (2), so the decimal terminates after (2) places.

Step 3

Exam Tip

\(189=3^3\cdot 7\), इसलिए सरल हर \(2^2\cdot 5\) बचेगा। बड़ी घात (2) है, इसलिए दशमलव (2) स्थानों पर समाप्त होगा।

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\(\frac{2^3\cdot 5^2}{2^7\cdot 5^5}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{2^3\cdot 5^2}{2^7\cdot 5^5}\) terminate?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

After cancellation, the denominator becomes \(2^4\cdot 5^3\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 2

Why this answer is correct

The correct answer is B. (4). After cancellation, the denominator becomes \(2^4\cdot 5^3\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 3

Exam Tip

कटौती के बाद हर \(2^4\cdot 5^3\) बचेगा। बड़ी घात (4) है, इसलिए दशमलव (4) स्थानों पर समाप्त होगा।

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\(\frac{3^5}{2^2\cdot 3^4\cdot 5^6}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{3^5}{2^2\cdot 3^4\cdot 5^6}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

After cancellation, the fraction becomes \(\frac{3}{2^2\cdot 5^6}\). The larger exponent is (6), so the decimal terminates after (6) places.

Step 2

Why this answer is correct

The correct answer is C. (6). After cancellation, the fraction becomes \(\frac{3}{2^2\cdot 5^6}\). The larger exponent is (6), so the decimal terminates after (6) places.

Step 3

Exam Tip

कटौती के बाद भिन्न \(\frac{3}{2^2\cdot 5^6}\) बनती है। बड़ी घात (6) है, इसलिए दशमलव (6) स्थानों पर समाप्त होगा।

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कथन: \(\frac{63}{2^4\cdot 3^2\cdot 5^3\cdot 7}\) का दशमलव सांत है। कारण: सरल करने पर हर में केवल (2) और (5) बचते हैं। सही विकल्प चुनिए।

Assertion: \(\frac{63}{2^4\cdot 3^2\cdot 5^3\cdot 7}\) has a terminating decimal. Reason: After reducing, only (2) and (5) remain in the denominator. Choose the correct option.

Explanation opens after your attempt
Correct Answer

A. कथन और कारण दोनों सही हैं तथा कारण सही व्याख्या हैBoth are true and the reason explains it

Step 1

Concept

Since \(63=3^2\cdot 7\), the reduced denominator is \(2^4\cdot 5^3\). The reason directly explains the terminating decimal rule.

Step 2

Why this answer is correct

The correct answer is A. कथन और कारण दोनों सही हैं तथा कारण सही व्याख्या है / Both are true and the reason explains it. Since \(63=3^2\cdot 7\), the reduced denominator is \(2^4\cdot 5^3\). The reason directly explains the terminating decimal rule.

Step 3

Exam Tip

\(63=3^2\cdot 7\), इसलिए कटौती के बाद हर \(2^4\cdot 5^3\) बचेगा। कारण सीधे सांत दशमलव का नियम समझाता है।

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\(\frac{125}{2^8\cdot 5^6\cdot 11}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{125}{2^8\cdot 5^6\cdot 11}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

Even after \(125=5^3\) cancels, (11) remains in the denominator. If a reduced denominator has a prime other than (2) and (5), the decimal is non-terminating recurring.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. Even after \(125=5^3\) cancels, (11) remains in the denominator. If a reduced denominator has a prime other than (2) and (5), the decimal is non-terminating recurring.

Step 3

Exam Tip

\(125=5^3\) कटने पर भी हर में (11) बचता है। सरलतम हर में (2) और (5) के अलावा कोई अभाज्य रहे तो दशमलव असांत आवर्ती होता है।

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\(\frac{84}{2^3\cdot 3\cdot 5^2\cdot 7}\) को सरल करने के बाद दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After reducing \(\frac{84}{2^3\cdot 3\cdot 5^2\cdot 7}\), after how many decimal places will its decimal expansion terminate?

Explanation opens after your attempt
Correct Answer

B. (2) स्थान(2) places

Step 1

Concept

Since \(84=2^2\cdot 3\cdot 7\), the reduced denominator is \(2\cdot 5^2\). The larger exponent is (2), so reduce first and then count places.

Step 2

Why this answer is correct

The correct answer is B. (2) स्थान / (2) places. Since \(84=2^2\cdot 3\cdot 7\), the reduced denominator is \(2\cdot 5^2\). The larger exponent is (2), so reduce first and then count places.

Step 3

Exam Tip

\(84=2^2\cdot 3\cdot 7\), इसलिए सरल हर \(2\cdot 5^2\) बचेगा। बड़ी घात (2) है, इसलिए पहले कटौती करें फिर स्थान गिनें।

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\(\frac{45}{2^5\cdot 3^2\cdot 5^4}\) को सरलतम रूप में लिखने के बाद दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After reducing \(\frac{45}{2^5\cdot 3^2\cdot 5^4}\) to lowest form, after how many decimal places will its decimal expansion terminate?

Explanation opens after your attempt
Correct Answer

C. (5)

Step 1

Concept

\(45=3^2\cdot 5\).

Step 2

Why this answer is correct

After cancellation, the denominator becomes \(2^5\cdot 5^3\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 3

Exam Tip

Always reduce the fraction before counting decimal places. चरण 1: \(45=3^2\cdot 5\) है। चरण 2: कटौती के बाद हर \(2^5\cdot 5^3\) बचेगा। बड़ी घात (5) है, इसलिए दशमलव (5) स्थानों पर समाप्त होगा। चरण 3: दशमलव स्थान गिनने से पहले अंश और हर को सरलतम रूप में जरूर लिखें।

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\(\frac{3^2\cdot 5}{2^6\cdot 3^2\cdot 5^4}\) के दशमलव प्रसार में कितने स्थान होंगे?

How many decimal places will the decimal expansion of \(\frac{3^2\cdot 5}{2^6\cdot 3^2\cdot 5^4}\) have?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

The numerator \(3^2\cdot 5\) cancels from the denominator.

Step 2

Why this answer is correct

The reduced denominator is \(2^6\cdot 5^3\). The larger exponent is (6), so the decimal terminates after (6) places.

Step 3

Exam Tip

Look for the larger exponent only after cancellation. चरण 1: अंश का \(3^2\cdot 5\) हर से कटेगा। चरण 2: सरलतम हर \(2^6\cdot 5^3\) बचेगा। बड़ी घात (6) है, इसलिए दशमलव (6) स्थानों पर समाप्त होगा। चरण 3: कटौती के बाद ही बड़ी घात देखें।

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\(\frac{98}{2\cdot 5\cdot 7^3}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{98}{2\cdot 5\cdot 7^3}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

\(98=2\cdot 7^2\).

Step 2

Why this answer is correct

After cancellation, the denominator becomes \(5\cdot 7\). Since (7) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

Check whether the whole power cancels or only part of it cancels. चरण 1: \(98=2\cdot 7^2\) है। चरण 2: कटौती के बाद हर \(5\cdot 7\) बचेगा। (7) बचने से दशमलव असांत आवर्ती होगा। चरण 3: घात पूरी कटे या नहीं, यह ध्यान से देखें।

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\(\frac{625}{2^8\cdot 5^6}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{625}{2^8\cdot 5^6}\) terminate?

Explanation opens after your attempt
Correct Answer

D. (8)

Step 1

Concept

\(625=5^4\).

Step 2

Why this answer is correct

After cancellation, the denominator becomes \(2^8\cdot 5^2\). The larger exponent is (8), so the decimal terminates after (8) places.

Step 3

Exam Tip

The numerator may cancel powers of (5), but a larger power of (2) may still remain. चरण 1: \(625=5^4\) है। चरण 2: कटौती के बाद हर \(2^8\cdot 5^2\) बचेगा। बड़ी घात (8) है, इसलिए दशमलव (8) स्थानों पर समाप्त होगा। चरण 3: अंश में (5) की घात कटेगी, पर (2) की बड़ी घात रह सकती है।

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\(\frac{2^4\cdot 3}{2^7\cdot 3^2\cdot 5^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{2^4\cdot 3}{2^7\cdot 3^2\cdot 5^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

The numerator cancels \(2^4\cdot 3\).

Step 2

Why this answer is correct

The reduced denominator becomes \(2^3\cdot 3\cdot 5^2\). Since (3) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

A prime factor may cancel only partially. चरण 1: अंश से \(2^4\cdot 3\) कटेगा। चरण 2: सरलतम हर \(2^3\cdot 3\cdot 5^2\) बचेगा। इसमें (3) बचा है, इसलिए दशमलव असांत आवर्ती होगा। चरण 3: एक ही अभाज्य गुणनखंड आंशिक रूप से कट सकता है।

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\(\frac{225}{2^4\cdot 3^2\cdot 5^5}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{225}{2^4\cdot 3^2\cdot 5^5}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

\(225=3^2\cdot 5^2\).

Step 2

Why this answer is correct

After cancellation, the denominator becomes \(2^4\cdot 5^3\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 3

Exam Tip

Powers present in the numerator can reduce the decimal length. चरण 1: \(225=3^2\cdot 5^2\) है। चरण 2: कटौती के बाद हर \(2^4\cdot 5^3\) बचेगा। बड़ी घात (4) है, इसलिए दशमलव (4) स्थानों पर समाप्त होगा। चरण 3: अंश में मौजूद घातें दशमलव स्थान घटा सकती हैं।

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कौन-सी भिन्न का दशमलव प्रसार सांत नहीं होगा?

Which fraction will not have a terminating decimal expansion?

Explanation opens after your attempt
Correct Answer

C. \(\frac{50}{2\cdot 5^2\cdot 7}\)

Step 1

Concept

Look for any factor other than (2) and (5) that remains in the denominator.

Step 2

Why this answer is correct

In \(\frac{50}{2\cdot 5^2\cdot 7}\), \(50=2\cdot 5^2\) cancels, but (7) remains. So the decimal is non-terminating recurring.

Step 3

Exam Tip

The remaining prime factors after cancellation decide the type. चरण 1: हर में (2) और (5) के अलावा बचने वाले गुणनखंड को देखें। चरण 2: \(\frac{50}{2\cdot 5^2\cdot 7}\) में \(50=2\cdot 5^2\) कटता है, लेकिन (7) हर में बचता है। इसलिए दशमलव असांत आवर्ती होगा। चरण 3: पूरी कटौती के बाद बचे अभाज्य गुणनखंड निर्णायक होते हैं।

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\(\frac{42}{2^2\cdot 3\cdot 5^4\cdot 7}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will \(\frac{42}{2^2\cdot 3\cdot 5^4\cdot 7}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

\(42=2\cdot 3\cdot 7\).

Step 2

Why this answer is correct

After cancellation, the denominator becomes \(2\cdot 5^4\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 3

Exam Tip

Check only the remaining denominator after cancellation. चरण 1: \(42=2\cdot 3\cdot 7\) है। चरण 2: कटौती के बाद हर \(2\cdot 5^4\) बचेगा। बड़ी घात (4) है, इसलिए दशमलव (4) स्थानों पर समाप्त होगा। चरण 3: आंशिक कटौती के बाद बचे हर को ही जाँचें।

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\(\frac{154}{2\cdot 5^3\cdot 7\cdot 11}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{154}{2\cdot 5^3\cdot 7\cdot 11}\) have?

Explanation opens after your attempt
Correct Answer

A. सांत और (3) स्थानों पर समाप्तTerminating after (3) places

Step 1

Concept

\(154=2\cdot 7\cdot 11\).

Step 2

Why this answer is correct

After cancelling \(2\cdot 7\cdot 11\), the denominator becomes \(5^3\). So the decimal terminates after (3) places.

Step 3

Exam Tip

Extra factors may cancel with the numerator, so reduce first. चरण 1: \(154=2\cdot 7\cdot 11\) है। चरण 2: हर से \(2\cdot 7\cdot 11\) कटने पर \(5^3\) बचता है। इसलिए दशमलव (3) स्थानों पर समाप्त होगा। चरण 3: अतिरिक्त गुणनखंड अंश से कट सकते हैं, इसलिए पहले सरल करें।

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\(\frac{13}{2^2\cdot 5^2\cdot 13^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{13}{2^2\cdot 5^2\cdot 13^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

The numerator (13) cancels only one factor (13) from \(13^2\).

Step 2

Why this answer is correct

The reduced denominator is \(2^2\cdot 5^2\cdot 13\). Since (13) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

Understand the difference between complete and partial cancellation. चरण 1: अंश का (13) हर के \(13^2\) में से केवल एक (13) काटेगा। चरण 2: सरलतम हर \(2^2\cdot 5^2\cdot 13\) बचेगा। (13) बचने से दशमलव असांत आवर्ती होगा। चरण 3: पूरी और आंशिक कटौती में फर्क समझें।

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\(\frac{5^k}{2^3\cdot 5^8}\) का दशमलव ठीक (3) स्थानों पर समाप्त हो, इसके लिए (k) का न्यूनतम मान क्या होगा?

What is the least value of (k) for \(\frac{5^k}{2^3\cdot 5^8}\) to terminate exactly after (3) decimal places?

Explanation opens after your attempt
Correct Answer

C. (5)

Step 1

Concept

\(5^k\) cancels with \(5^8\) in the denominator.

Step 2

Why this answer is correct

The denominator becomes \(2^3\cdot 5^{8-k}\). For exactly (3) places, \(8-k\leq 3\), so the least (k) is (5).

Step 3

Exam Tip

For a least value, solve the inequality carefully. चरण 1: \(5^k\) हर के \(5^8\) से कटेगा। चरण 2: हर \(2^3\cdot 5^{8-k}\) बनेगा। ठीक (3) स्थानों के लिए \(8-k\leq 3\) चाहिए, इसलिए न्यूनतम (k=5)। चरण 3: न्यूनतम मान में असमानता को सही दिशा में हल करें।

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\(\frac{55}{2\cdot 5^2\cdot 11^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{55}{2\cdot 5^2\cdot 11^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

\(55=5\cdot 11\).

Step 2

Why this answer is correct

After cancellation, the denominator becomes \(2\cdot 5\cdot 11\). Since (11) remains, the decimal is non-terminating recurring.

Step 3

Exam Tip

After partial cancellation, always check the remaining factors. चरण 1: \(55=5\cdot 11\) है। चरण 2: कटौती के बाद हर \(2\cdot 5\cdot 11\) बचेगा। (11) बचने के कारण दशमलव असांत आवर्ती होगा। चरण 3: आंशिक कटौती के बाद बचे हुए गुणनखंडों को जरूर जाँचें।

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\(\frac{18}{2^2\cdot 3^2\cdot 5^4}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will the decimal expansion of \(\frac{18}{2^2\cdot 3^2\cdot 5^4}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

\(18=2\cdot 3^2\).

Step 2

Why this answer is correct

After cancellation, the denominator becomes \(2\cdot 5^4\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 3

Exam Tip

Carefully cancel prime powers present in the numerator. चरण 1: \(18=2\cdot 3^2\) है। चरण 2: कटौती के बाद हर \(2\cdot 5^4\) बचेगा। बड़ी घात (4) है, इसलिए दशमलव (4) स्थानों पर समाप्त होगा। चरण 3: अंश में मौजूद अभाज्य घातों को ध्यान से काटें।

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किस भिन्न का दशमलव प्रसार सांत होगा, जबकि दिए गए हर में (13) भी दिखाई देता है?

Which fraction will have a terminating decimal expansion even though the given denominator shows a factor (13)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{91}{2^2\cdot 5\cdot 13}\)

Step 1

Concept

\(91=7\cdot 13\), so the factor (13) in the denominator cancels.

Step 2

Why this answer is correct

The reduced denominator is \(2^2\cdot 5\), containing only (2) and (5). Hence the decimal terminates.

Step 3

Exam Tip

An extra prime factor may cancel with the numerator. चरण 1: \(91=7\cdot 13\), इसलिए हर का (13) कट जाएगा। चरण 2: सरलतम हर \(2^2\cdot 5\) बचेगा, जिसमें केवल (2) और (5) हैं। इसलिए दशमलव सांत होगा। चरण 3: अतिरिक्त अभाज्य गुणनखंड अंश से कट सकता है।

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\(\frac{75}{2^3\cdot 3\cdot 5^2}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will the decimal expansion of \(\frac{75}{2^3\cdot 3\cdot 5^2}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

\(75=3\cdot 5^2\).

Step 2

Why this answer is correct

Cancelling \(3\cdot 5^2\) from the denominator leaves \(2^3\). So the decimal terminates after (3) places.

Step 3

Exam Tip

Always complete cancellation before counting decimal places. चरण 1: \(75=3\cdot 5^2\) है। चरण 2: हर से \(3\cdot 5^2\) कटने पर हर \(2^3\) बचेगा। इसलिए दशमलव (3) स्थानों पर समाप्त होगा। चरण 3: पहले अंश और हर की पूरी कटौती करें।

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\(\frac{81}{2^4\cdot 3^4\cdot 5^2}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will the decimal expansion of \(\frac{81}{2^4\cdot 3^4\cdot 5^2}\) terminate?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

\(81=3^4\), so \(3^4\) cancels completely from the denominator.

Step 2

Why this answer is correct

The reduced denominator is \(2^4\cdot 5^2\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 3

Exam Tip

First check cancellation of prime factors other than (2) and (5). चरण 1: \(81=3^4\), इसलिए हर का \(3^4\) पूरा कट जाएगा। चरण 2: सरलतम हर \(2^4\cdot 5^2\) बचेगा। बड़ी घात (4) है, इसलिए दशमलव (4) स्थानों पर समाप्त होगा। चरण 3: पहले गैर जरूरी अभाज्य गुणनखंडों की कटौती देखें।

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\(\frac{44}{2^3\cdot 5\cdot 11}\) का सही दशमलव-प्रसार निष्कर्ष कौन-सा है?

What is the correct conclusion about the decimal expansion of \(\frac{44}{2^3\cdot 5\cdot 11}\)?

Explanation opens after your attempt
Correct Answer

A. सांत और (1) दशमलव स्थानTerminating with (1) decimal place

Step 1

Concept

\(44=2^2\cdot 11\).

Step 2

Why this answer is correct

Cancelling \(2^2\cdot 11\) from \(2^3\cdot 5\cdot 11\) leaves \(2\cdot 5=10\). So the decimal terminates after (1) place.

Step 3

Exam Tip

Count decimal places only after complete cancellation. चरण 1: \(44=2^2\cdot 11\) है। चरण 2: हर \(2^3\cdot 5\cdot 11\) से \(2^2\cdot 11\) कटने पर \(2\cdot 5=10\) बचता है। इसलिए दशमलव (1) स्थान पर समाप्त होगा। चरण 3: पूरी कटौती के बाद ही दशमलव स्थान गिनें।

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\(\frac{44}{2^3\cdot 5\cdot 11}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{44}{2^3\cdot 5\cdot 11}\) have?

Explanation opens after your attempt
Correct Answer

A. सांत और (2) दशमलव स्थानTerminating with (2) decimal places

Step 1

Concept

\(44=2^2\cdot 11\).

Step 2

Why this answer is correct

After cancellation, the denominator becomes \(2\cdot 5=10\). So the decimal terminates after (1) place. Since that exact statement is not listed, the given options contain an issue.

Step 3

Exam Tip

Complete your calculation before trusting the options. चरण 1: \(44=2^2\cdot 11\) है। चरण 2: कटौती के बाद हर \(2\cdot 5\) बचेगा, जो (10) है। इसलिए दशमलव (1) स्थान पर समाप्त होगा। दिए गए विकल्पों में यह बात सीधे नहीं है, इसलिए सबसे निकट भी गलत होगा। चरण 3: विकल्पों से पहले अपनी गणना पूरी करें।

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\(\frac{35}{2^2\cdot 5\cdot 7^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{35}{2^2\cdot 5\cdot 7^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

\(35=5\cdot 7\).

Step 2

Why this answer is correct

The factor (5) and one (7) cancel, but one (7) remains. The reduced denominator is \(2^2\cdot 7\). So the decimal is non-terminating recurring.

Step 3

Exam Tip

After partial cancellation, check what factor remains. चरण 1: \(35=5\cdot 7\) है। चरण 2: हर से (5) और एक (7) कटेगा, पर एक (7) बच जाएगा। सरलतम हर \(2^2\cdot 7\) है। इसलिए दशमलव असांत आवर्ती होगा। चरण 3: आंशिक कटौती के बाद बचे गुणनखंड को जरूर देखें।

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\(\frac{16}{2^7\cdot 5^4}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will the decimal expansion of \(\frac{16}{2^7\cdot 5^4}\) terminate?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

\(16=2^4\), so \(2^4\) cancels from the denominator.

Step 2

Why this answer is correct

The reduced denominator is \(2^3\cdot 5^4\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 3

Exam Tip

Include powers hidden in the numerator during cancellation. चरण 1: \(16=2^4\), इसलिए हर से \(2^4\) कटेगा। चरण 2: सरलतम हर \(2^3\cdot 5^4\) होगा। बड़ी घात (4) है, इसलिए दशमलव (4) स्थानों पर समाप्त होगा। चरण 3: अंश में छिपी घातों को कटौती में शामिल करें।

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\(\frac{5}{2^4\cdot 5^6}\) को सरलतम रूप में लिखने के बाद दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After reducing \(\frac{5}{2^4\cdot 5^6}\) to lowest form, after how many decimal places will it terminate?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

The numerator (5) cancels one factor of (5) from \(5^6\).

Step 2

Why this answer is correct

The reduced denominator becomes \(2^4\cdot 5^5\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 3

Exam Tip

Factors (2) or (5) in the numerator can reduce the decimal length. चरण 1: अंश का (5) हर के \(5^6\) से कटेगा। चरण 2: सरलतम हर \(2^4\cdot 5^5\) बनेगा। बड़ी घात (5) है, इसलिए दशमलव (5) स्थानों पर समाप्त होगा। चरण 3: अंश में मौजूद (2) या (5) दशमलव स्थान घटा सकते हैं।

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\(\frac{77}{2^3\cdot 5^2\cdot 7}\) के दशमलव प्रसार का सही प्रकार क्या है?

What is the correct type of decimal expansion of \(\frac{77}{2^3\cdot 5^2\cdot 7}\)?

Explanation opens after your attempt
Correct Answer

A. सांतTerminating

Step 1

Concept

The numerator \(77=7\cdot 11\), so the factor (7) in the denominator cancels.

Step 2

Why this answer is correct

The reduced denominator becomes \(2^3\cdot 5^2\), containing only (2) and (5). Hence the decimal terminates.

Step 3

Exam Tip

In tricky questions, extra denominator factors may cancel with the numerator. चरण 1: अंश \(77=7\cdot 11\) है, इसलिए हर का (7) कट जाएगा। चरण 2: सरलतम हर \(2^3\cdot 5^2\) बचेगा, जिसमें केवल (2) और (5) हैं। इसलिए दशमलव सांत होगा। चरण 3: कठिन विकल्पों में हर के अतिरिक्त गुणनखंड अंश से कट सकते हैं।

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\(\frac{125}{2^4\times5^5}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many places will the decimal expansion of \(\frac{125}{2^4\times5^5}\) terminate?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

\(125=5^3\), so \(5^3\) cancels from \(5^5\) in the denominator.

Step 2

Why this answer is correct

The reduced denominator is \(2^4\times5^2\), whose larger exponent is (4).

Step 3

Exam Tip

Exam tip: Factors (2) or (5) in the numerator can reduce the denominator powers. चरण 1: \(125=5^3\) है, इसलिए हर के \(5^5\) में से \(5^3\) कट जाएगा। चरण 2: सरल रूप में हर \(2^4\times5^2\) रहेगा, जिसकी बड़ी घात (4) है। चरण 3: परीक्षा सुझाव: अंश में मौजूद (2) या (5) हर की घातों को घटा सकते हैं।

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\(\frac{5}{2^3\times3\times5^2}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{5}{2^3\times3\times5^2}\) have?

Explanation opens after your attempt
Correct Answer

B. असमाप्त आवर्तीNon-terminating recurring

Step 1

Concept

The numerator (5) cancels one factor of (5) from \(5^2\) in the denominator.

Step 2

Why this answer is correct

The reduced denominator still has \(2^3\times3\times5\), so factor (3) remains.

Step 3

Exam Tip

Exam tip: If (3) remains after cancellation, the decimal will be recurring. चरण 1: अंश (5) और हर में \(5^2\) है, इसलिए एक (5) कट सकता है। चरण 2: सरल रूप में हर \(2^3\times3\times5\) रहेगा, जिसमें (3) बचता है। चरण 3: परीक्षा सुझाव: कटौती के बाद भी यदि (3) बचे तो दशमलव आवर्ती होगा।

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किस न्यूनतम प्राकृतिक संख्या से \(\frac{5}{18}\) को गुणा करने पर प्राप्त भिन्न का दशमलव प्रसार समाप्त होगा?

By which least natural number should \(\frac{5}{18}\) be multiplied so that the resulting fraction has a terminating decimal expansion?

Explanation opens after your attempt
Correct Answer

C. (9)

Step 1

Concept

\(18=2\times3^2\), and \(3^2\) must be removed from the denominator for a terminating decimal.

Step 2

Why this answer is correct

\(\frac{5}{18}\times9=\frac{45}{18}=\frac{5}{2}\), whose denominator is (2).

Step 3

Exam Tip

Exam tip: Remove the full remaining power of the unwanted prime factor. चरण 1: \(18=2\times3^2\) है, और समाप्त दशमलव के लिए हर से \(3^2\) हटना चाहिए। चरण 2: \(\frac{5}{18}\times9=\frac{45}{18}=\frac{5}{2}\), जिसका हर (2) है। चरण 3: परीक्षा सुझाव: हर में जितनी (3) की घात बची हो, उसे हटाने के लिए उतनी ही मदद चाहिए।

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\(\frac{14}{35}\) को सरल करने के बाद दशमलव विस्तार कैसा होगा?

After reducing \(\frac{14}{35}\), what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

A. समाप्तTerminating

Step 1

Concept

\(\frac{14}{35}=\frac{2}{5}\).

Step 2

Why this answer is correct

The reduced denominator is (5), so the decimal terminates.

Step 3

Exam Tip

Do not be misled by the factor (7) in the original denominator; reduce first. चरण 1: \(\frac{14}{35}=\frac{2}{5}\) है। चरण 2: सरल रूप में भाजक (5) है, इसलिए दशमलव समाप्त होगा। चरण 3: मूल भाजक में (7) देखकर भ्रमित न हों, पहले काटें।

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\(\frac{6}{15}\) के दशमलव विस्तार के बारे में सही विकल्प चुनिए।

Choose the correct option about the decimal expansion of \(\frac{6}{15}\).

Explanation opens after your attempt
Correct Answer

A. समाप्तTerminating

Step 1

Concept

\(\frac{6}{15}=\frac{2}{5}\).

Step 2

Why this answer is correct

The reduced denominator is (5), so the decimal terminates.

Step 3

Exam Tip

If a factor like (3) cancels during reduction, the decimal may terminate. चरण 1: \(\frac{6}{15}=\frac{2}{5}\) है। चरण 2: सरल रूप में भाजक (5) है, इसलिए दशमलव समाप्त होगा। चरण 3: सरलीकरण के बाद (3) हट जाए तो परिणाम समाप्त हो सकता है।

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यदि \(x=\sqrt{2}+\sqrt{3}\), तो \(x^2-2\sqrt{6}\) का मान क्या है?

If \(x=\sqrt{2}+\sqrt{3}\), what is the value of \(x^2-2\sqrt{6}\)?

Explanation opens after your attempt
Correct Answer

A. (5)

Step 1

Concept

(x-2=\(\sqrt{2}+\sqrt{3}\)2=5+2\sqrt{6}).

Step 2

Why this answer is correct

Subtracting \(2\sqrt{6}\) leaves (5).

Step 3

Exam Tip

After squaring, cancel like irrational terms. चरण 1: (x-2=\(\sqrt{2}+\sqrt{3}\)2=5+2\sqrt{6})। चरण 2: इसमें से \(2\sqrt{6}\) घटाने पर (5) बचता है। चरण 3: वर्ग करने के बाद समान अपरिमेय पदों को काटें।

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यदि (x) अपरिमेय है और \(x+ \sqrt{2}\) परिमेय है, तो (x) का संभावित रूप कौन-सा हो सकता है?

If (x) is irrational and \(x+\sqrt{2}\) is rational, which can be a possible form of (x)?

Explanation opens after your attempt
Correct Answer

A. \(3-\sqrt{2}\)

Step 1

Concept

To make \(x+\sqrt{2}\) rational, (x) should contain a \(-\sqrt{2}\) part.

Step 2

Why this answer is correct

If \(x=3-\sqrt{2}\), then \(x+\sqrt{2}=3\), which is rational.

Step 3

Exam Tip

Look for cancellation of the irrational part. चरण 1: \(x+\sqrt{2}\) को परिमेय बनाने के लिए (x) में \(-\sqrt{2}\) वाला भाग होना चाहिए। चरण 2: \(x=3-\sqrt{2}\) रखने पर \(x+\sqrt{2}=3\), जो परिमेय है। चरण 3: अपरिमेय भाग के कटने की संभावना खोजें।

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कौन-सा कथन \(\sqrt{5}+\sqrt{20}-\sqrt{45}\) के लिए सही है?

Which statement is correct for \(\sqrt{5}+\sqrt{20}-\sqrt{45}\)?

Explanation opens after your attempt
Correct Answer

A. यह (0) है और परिमेय हैIt is (0) and rational

Step 1

Concept

Write \(\sqrt{20}=2\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\).

Step 2

Why this answer is correct

\(\sqrt{5}+2\sqrt{5}-3\sqrt{5}=0\), which is rational.

Step 3

Exam Tip

Terms that look irrational may cancel to give a rational result. चरण 1: \(\sqrt{20}=2\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\) लिखें। चरण 2: \(\sqrt{5}+2\sqrt{5}-3\sqrt{5}=0\), जो परिमेय है। चरण 3: अपरिमेय दिखने वाले पद कटकर परिमेय उत्तर दे सकते हैं।

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किस विकल्प में दी गई संख्या (0) के बराबर है?

Which option is equal to (0)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{8}-2\sqrt{2}\)

Step 1

Concept

\(\sqrt{8}=2\sqrt{2}\).

Step 2

Why this answer is correct

Therefore \(\sqrt{8}-2\sqrt{2}=0\), which is rational.

Step 3

Exam Tip

Sometimes terms that look irrational cancel completely. चरण 1: \(\sqrt{8}=2\sqrt{2}\) है। चरण 2: इसलिए \(\sqrt{8}-2\sqrt{2}=0\), जो परिमेय है। चरण 3: कभी-कभी अपरिमेय जैसे दिखने वाले पद पूरी तरह कट जाते हैं।

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यदि \(x=\sqrt{3}+2\) है, तो \(x-\sqrt{3}\) का मान और प्रकृति क्या होगी?

If \(x=\sqrt{3}+2\), what will be the value and nature of \(x-\sqrt{3}\)?

Explanation opens after your attempt
Correct Answer

A. (2), परिमेय(2), rational

Step 1

Concept

Substitute the given value of (x).

Step 2

Why this answer is correct

(x-\sqrt{3}=\(\sqrt{3}+2\)-\sqrt{3}=2), which is rational.

Step 3

Exam Tip

Like irrational terms may cancel, so decide the nature only after simplifying. चरण 1: दिए गए (x) का मान रखें। चरण 2: (x-\sqrt{3}=\(\sqrt{3}+2\)-\sqrt{3}=2), जो परिमेय है। चरण 3: समान अपरिमेय पद कट सकते हैं, इसलिए सरल करने के बाद ही प्रकृति तय करें।

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निम्न में से कौन-सा योग परिमेय है?

Which of the following sums is rational?

Explanation opens after your attempt
Correct Answer

A. (\(2+\sqrt{3}\)+\(5-\sqrt{3}\))

Step 1

Concept

First look for like irrational terms.

Step 2

Why this answer is correct

(\(2+\sqrt{3}\)+\(5-\sqrt{3}\)=7) because \(\sqrt{3}\) and \(-\sqrt{3}\) cancel.

Step 3

Exam Tip

Opposite irrational terms can produce a rational result. चरण 1: पहले समान अपरिमेय पदों को देखें। चरण 2: (\(2+\sqrt{3}\)+\(5-\sqrt{3}\)=7), क्योंकि \(\sqrt{3}\) और \(-\sqrt{3}\) कट जाते हैं। चरण 3: विपरीत अपरिमेय पदों से परिमेय उत्तर बन सकता है।

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