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33 results found for "denominator-test" in Class 10.

Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

कौन-सा हर सरलतम भिन्न में ठीक (6) दशमलव स्थान नहीं देगा?

Which denominator will not give exactly (6) decimal places in a reduced fraction?

Explanation opens after your attempt
Correct Answer

B. (3125)

Step 1

Concept

For exactly (6) places, the larger exponent of (2) and (5) must be (6). Since \(3125=5^5\), it gives only (5) decimal places.

Step 2

Why this answer is correct

The correct answer is B. (3125). For exactly (6) places, the larger exponent of (2) and (5) must be (6). Since \(3125=5^5\), it gives only (5) decimal places.

Step 3

Exam Tip

ठीक (6) स्थानों के लिए (2) और (5) की बड़ी घात (6) होनी चाहिए। \(3125=5^5\) है, इसलिए यह केवल (5) दशमलव स्थान देगा।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

कौन-सा हर ठीक (3) दशमलव स्थान नहीं देगा यदि भिन्न सरलतम रूप में हो?

Which denominator will not give exactly (3) decimal places if the fraction is in lowest form?

Explanation opens after your attempt
Correct Answer

D. (16)

Step 1

Concept

For exactly (3) places, the larger exponent must be (3). Since \(16=2^4\), it terminates after (4) places.

Step 2

Why this answer is correct

The correct answer is D. (16). For exactly (3) places, the larger exponent must be (3). Since \(16=2^4\), it terminates after (4) places.

Step 3

Exam Tip

ठीक (3) स्थानों के लिए बड़ी घात (3) होनी चाहिए। \(16=2^4\) होने से दशमलव (4) स्थानों पर समाप्त होगा।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{1}{2^4\cdot 5^4\cdot 17}\) के बारे में सही कथन कौन-सा है?

Which statement is correct about \(\frac{1}{2^4\cdot 5^4\cdot 17}\)?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्ती और (4) अनावर्ती आरंभिक अंकNon-terminating recurring with (4) initial non-repeating digits

Step 1

Concept

Since (17) remains, the decimal is non-terminating recurring. The larger exponent in \(2^4\cdot 5^4\) gives (4) initial non-repeating digits.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती और (4) अनावर्ती आरंभिक अंक / Non-terminating recurring with (4) initial non-repeating digits. Since (17) remains, the decimal is non-terminating recurring. The larger exponent in \(2^4\cdot 5^4\) gives (4) initial non-repeating digits.

Step 3

Exam Tip

(17) बचता है इसलिए दशमलव असांत आवर्ती होगा। \(2^4\cdot 5^4\) की बड़ी घात (4) आरंभिक अनावर्ती भाग दिखाती है।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{320}{2^7\cdot 5^3\cdot 11}\) 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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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

यदि \(\frac{p}{q}\) सरलतम रूप में है और \(q=2^m5^n\cdot 13^r\) जहाँ (r>0) है तो दशमलव प्रसार कैसा होगा?

If \(\frac{p}{q}\) is in lowest form and \(q=2^m5^n\cdot 13^r\), where (r>0), what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

A positive power of (13) remains in the reduced denominator. Therefore the rational number has a non-terminating recurring decimal.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. A positive power of (13) remains in the reduced denominator. Therefore the rational number has a non-terminating recurring decimal.

Step 3

Exam Tip

सरलतम हर में (13) की धनात्मक घात बची है। इसलिए परिमेय संख्या का दशमलव असांत आवर्ती होगा।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{55}{2^2\cdot 5^3\cdot 11^2}\) 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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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{1}{2^3\cdot 5^3\cdot 11}\) के बारे में सही कथन कौन-सा है?

Which statement is correct about \(\frac{1}{2^3\cdot 5^3\cdot 11}\)?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्ती और (3) अनावर्ती आरंभिक अंकNon-terminating recurring with (3) initial non-repeating digits

Step 1

Concept

Since (11) remains, the decimal is non-terminating recurring. The larger exponent in \(2^3\cdot 5^3\) gives (3) initial non-repeating digits.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती और (3) अनावर्ती आरंभिक अंक / Non-terminating recurring with (3) initial non-repeating digits. Since (11) remains, the decimal is non-terminating recurring. The larger exponent in \(2^3\cdot 5^3\) gives (3) initial non-repeating digits.

Step 3

Exam Tip

(11) बचता है इसलिए दशमलव असांत आवर्ती होगा। \(2^3\cdot 5^3\) की बड़ी घात (3) आरंभिक अनावर्ती भाग दिखाती है।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{200}{2^3\cdot 5^3\cdot 7}\) 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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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

यदि \(\frac{p}{q}\) सरलतम रूप में है और \(q=2^m5^n\cdot 11^r\) जहाँ (r>0) है तो दशमलव प्रसार कैसा होगा?

If \(\frac{p}{q}\) is in lowest form and \(q=2^m5^n\cdot 11^r\), where (r>0), what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

A positive power of (11) remains in the reduced denominator. Therefore the rational number has a non-terminating recurring decimal.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. A positive power of (11) remains in the reduced denominator. Therefore the rational number has a non-terminating recurring decimal.

Step 3

Exam Tip

सरलतम हर में (11) की धनात्मक घात बची है। इसलिए परिमेय संख्या का दशमलव असांत आवर्ती होगा।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

कौन-सा कथन हमेशा सही है जब \(\frac{p}{q}\) सरलतम रूप में हो?

Which statement is always correct when \(\frac{p}{q}\) is in lowest form?

Explanation opens after your attempt
Correct Answer

A. यदि (q) \(10^k\) का भाजक है तो दशमलव सांत होगाIf (q) divides \(10^k\), the decimal terminates

Step 1

Concept

\(10^k\) has only prime factors (2) and (5), so any divisor gives a terminating decimal. The other statements are not always true because extra factors may occur.

Step 2

Why this answer is correct

The correct answer is A. यदि (q) \(10^k\) का भाजक है तो दशमलव सांत होगा / If (q) divides \(10^k\), the decimal terminates. \(10^k\) has only prime factors (2) and (5), so any divisor gives a terminating decimal. The other statements are not always true because extra factors may occur.

Step 3

Exam Tip

\(10^k\) में केवल (2) और (5) के गुणनखंड होते हैं इसलिए उसके भाजक से सांत दशमलव मिलेगा। बाकी कथन अतिरिक्त गुणनखंडों के कारण हमेशा सही नहीं हैं।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{1}{2^2\cdot 5^2\cdot 9}\) के बारे में सही कथन कौन-सा है?

Which statement is correct about \(\frac{1}{2^2\cdot 5^2\cdot 9}\)?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्ती और (2) अनावर्ती आरंभिक अंकNon-terminating recurring with (2) initial non-repeating digits

Step 1

Concept

Since \(9=3^2\) remains, the decimal is non-terminating recurring. The larger exponent in \(2^2\cdot 5^2\) gives (2) initial non-repeating digits.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती और (2) अनावर्ती आरंभिक अंक / Non-terminating recurring with (2) initial non-repeating digits. Since \(9=3^2\) remains, the decimal is non-terminating recurring. The larger exponent in \(2^2\cdot 5^2\) gives (2) initial non-repeating digits.

Step 3

Exam Tip

\(9=3^2\) बचता है, इसलिए दशमलव असांत आवर्ती होगा। \(2^2\cdot 5^2\) की बड़ी घात (2) आरंभिक अनावर्ती भाग दिखाती है।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

यदि \(\frac{p}{q}\) सरलतम रूप में है और \(q=2^m5^n\cdot 7^r\), जहाँ (r>0), तो दशमलव प्रसार कैसा होगा?

If \(\frac{p}{q}\) is in lowest form and \(q=2^m5^n\cdot 7^r\), where (r>0), what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

A positive power of (7) remains in the reduced denominator. Therefore the rational number has a non-terminating recurring decimal.

Step 2

Why this answer is correct

The correct answer is B. असांत आवर्ती / Non-terminating recurring. A positive power of (7) remains in the reduced denominator. Therefore the rational number has a non-terminating recurring decimal.

Step 3

Exam Tip

सरलतम हर में (7) की धनात्मक घात बची है। इसलिए परिमेय संख्या का दशमलव असांत आवर्ती होगा।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

कौन-सी भिन्न असांत आवर्ती दशमलव देगी?

Which fraction will give a non-terminating recurring decimal?

Explanation opens after your attempt
Correct Answer

C. \(\frac{49}{2\cdot 5^2\cdot 7^2}\)

Step 1

Concept

In \(\frac{49}{2\cdot 5^2\cdot 7^2}\), \(49=7^2\) cancels completely, so it terminates. For a non-terminating recurring decimal, a factor other than (2) and (5) must remain in the reduced denominator.

Step 2

Why this answer is correct

The correct answer is C. \(\frac{49}{2\cdot 5^2\cdot 7^2}\). In \(\frac{49}{2\cdot 5^2\cdot 7^2}\), \(49=7^2\) cancels completely, so it terminates. For a non-terminating recurring decimal, a factor other than (2) and (5) must remain in the reduced denominator.

Step 3

Exam Tip

\(\frac{49}{2\cdot 5^2\cdot 7^2}\) में \(49=7^2\) पूरा कट जाता है, इसलिए यह सांत है। सही असांत आवर्ती के लिए सरलतम हर में (2) और (5) के अलावा कोई गुणनखंड बचना चाहिए।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

कौन-सा कथन हमेशा सत्य है, जब \(\frac{p}{q}\) सरलतम रूप में हो?

Which statement is always true when \(\frac{p}{q}\) is in lowest form?

Explanation opens after your attempt
Correct Answer

C. यदि \(q=2^m5^n\), तो दशमलव सांत होगाIf \(q=2^m5^n\), the decimal terminates

Step 1

Concept

A decimal terminates when the reduced denominator has only (2) and (5). The other statements are incomplete because other prime factors may also be present.

Step 2

Why this answer is correct

The correct answer is C. यदि \(q=2^m5^n\), तो दशमलव सांत होगा / If \(q=2^m5^n\), the decimal terminates. A decimal terminates when the reduced denominator has only (2) and (5). The other statements are incomplete because other prime factors may also be present.

Step 3

Exam Tip

सरलतम हर में केवल (2) और (5) होने पर दशमलव सांत होता है। बाकी कथन अधूरे हैं क्योंकि अन्य अभाज्य गुणनखंड भी हो सकते हैं।

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Question Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{125}{2^8\cdot 5^6\cdot 11}\) 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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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{18}{999}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{18}{999}\) have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

\(\frac{18}{999}=\frac{2}{111}\).

Step 2

Why this answer is correct

\(111=3\cdot 37\), which has factors other than (2) and (5). Therefore the decimal is non-terminating recurring.

Step 3

Exam Tip

Fractions from recurring decimals often have denominators made from (9)'s. चरण 1: \(\frac{18}{999}=\frac{2}{111}\) है। चरण 2: \(111=3\cdot 37\), जिसमें (2) और (5) के अलावा गुणनखंड हैं। इसलिए दशमलव असांत आवर्ती होगा। चरण 3: आवर्ती दशमलव से आई भिन्नों में हर में अक्सर (9) वाले गुणनखंड होते हैं।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

किस विकल्प में \(\frac{p}{q}\) का दशमलव सांत होना निश्चित है, जब भिन्न सरलतम रूप में हो?

In which option is the decimal expansion of \(\frac{p}{q}\) certainly terminating when the fraction is in lowest form?

Explanation opens after your attempt
Correct Answer

A. \(q=2^4\cdot 5^3\)

Step 1

Concept

A decimal terminates when the reduced denominator contains only (2) and (5).

Step 2

Why this answer is correct

\(q=2^4\cdot 5^3\) satisfies this condition. The other options contain (3), (7), or (11).

Step 3

Exam Tip

Check the prime factors of the denominator carefully. चरण 1: सरलतम हर में केवल (2) और (5) होने पर दशमलव सांत होता है। चरण 2: \(q=2^4\cdot 5^3\) इस शर्त को पूरा करता है। बाकी विकल्पों में (3), (7), या (11) हैं। चरण 3: हर के अभाज्य गुणनखंडों को ध्यान से देखें।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

निम्न में से कौन-सा हर ठीक (4) दशमलव स्थान नहीं देगा, यदि भिन्न सरलतम रूप में हो?

Which denominator will not give exactly (4) decimal places if the fraction is in lowest form?

Explanation opens after your attempt
Correct Answer

D. (125)

Step 1

Concept

For exactly (4) places, the larger exponent must be (4).

Step 2

Why this answer is correct

\(16=2^4\), \(625=5^4\), and \(80=2^4\cdot 5\) give exactly (4) places. \(125=5^3\) gives only (3) places.

Step 3

Exam Tip

For exact places, the larger exponent must match the required number. चरण 1: ठीक (4) स्थानों के लिए बड़ी घात (4) होनी चाहिए। चरण 2: \(16=2^4\), \(625=5^4\), और \(80=2^4\cdot 5\) ठीक (4) स्थान देंगे। \(125=5^3\) केवल (3) स्थान देता है। चरण 3: ठीक स्थानों में बड़ी घात बराबर होनी चाहिए।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

यदि \(\frac{p}{q}\) सरलतम रूप में है और \(q=2^3\cdot 5^2\cdot 17\), तो दशमलव प्रसार कैसा होगा?

If \(\frac{p}{q}\) is in lowest form and \(q=2^3\cdot 5^2\cdot 17\), what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

The fraction is in lowest form, so the factor (17) will not cancel.

Step 2

Why this answer is correct

The reduced denominator has (17) besides (2) and (5). Therefore the decimal is non-terminating recurring.

Step 3

Exam Tip

A non-terminating decimal of a rational number is recurring. चरण 1: भिन्न सरलतम रूप में है, इसलिए हर का (17) नहीं कटेगा। चरण 2: सरलतम हर में (2) और (5) के अलावा (17) है। इसलिए दशमलव असांत आवर्ती होगा। चरण 3: परिमेय संख्या का असांत दशमलव आवर्ती होता है।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

कौन-सा कथन \(\frac{p}{q}\) के दशमलव प्रसार के लिए सही है, जब \(\frac{p}{q}\) सरलतम रूप में हो?

Which statement is correct for the decimal expansion of \(\frac{p}{q}\), when \(\frac{p}{q}\) is in lowest form?

Explanation opens after your attempt
Correct Answer

A. यदि \(q=2^m5^n\), तो दशमलव सांत होगाIf \(q=2^m5^n\), the decimal will terminate

Step 1

Concept

The rule applies to the denominator in lowest form.

Step 2

Why this answer is correct

If \(q=2^m5^n\), the denominator has only (2) and (5), so the decimal terminates. The other statements are incomplete because (q) may contain other prime factors.

Step 3

Exam Tip

Be careful with words like always and never. चरण 1: नियम सरलतम हर पर लागू होता है। चरण 2: यदि \(q=2^m5^n\), तो हर में केवल (2) और (5) हैं, इसलिए दशमलव सांत होगा। बाकी कथन अधूरे हैं क्योंकि (q) में अन्य अभाज्य गुणनखंड भी हो सकते हैं। चरण 3: हमेशा और कभी नहीं जैसे शब्दों पर सावधानी रखें।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{1}{2^a5^b3^c}\) में (c>0) है। इस भिन्न का दशमलव प्रसार कैसा होगा?

In \(\frac{1}{2^a5^b3^c}\), (c>0). What type of decimal expansion will this fraction have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

The numerator is (1), so \(3^c\) cannot cancel.

Step 2

Why this answer is correct

The reduced denominator contains (3), a prime other than (2) and (5). Hence the decimal is non-terminating recurring.

Step 3

Exam Tip

When the numerator is (1), the denominator test is direct. चरण 1: अंश (1) है, इसलिए हर का \(3^c\) कट नहीं सकता। चरण 2: सरलतम हर में (3) बचता है, जो (2) और (5) से अलग अभाज्य गुणनखंड है। इसलिए दशमलव असांत आवर्ती होगा। चरण 3: अंश (1) हो तो हर की जाँच सीधी होती है।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

सरलतम रूप में किसी परिमेय संख्या का हर \(2^2\cdot 5\cdot 9\) है। उसका दशमलव प्रसार कैसा होगा?

In lowest form, the denominator of a rational number is \(2^2\cdot 5\cdot 9\). What type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्तीNon-terminating recurring

Step 1

Concept

\(9=3^2\), so the reduced denominator contains the prime factor (3).

Step 2

Why this answer is correct

If a reduced denominator has a prime other than (2) and (5), the decimal is non-terminating recurring.

Step 3

Exam Tip

Break composite factors into primes first. चरण 1: \(9=3^2\), इसलिए सरलतम हर में (3) का गुणनखंड है। चरण 2: हर में (2) और (5) के अलावा कोई अभाज्य गुणनखंड हो तो दशमलव असांत आवर्ती होता है। चरण 3: संयुक्त संख्याओं को पहले अभाज्य रूप में तोड़ें।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{1}{2^2\cdot 5^2\cdot 7}\) के दशमलव प्रसार के बारे में कौन-सा कथन सबसे सही है?

Which statement is most correct about the decimal expansion of \(\frac{1}{2^2\cdot 5^2\cdot 7}\)?

Explanation opens after your attempt
Correct Answer

C. यह असांत आवर्ती होगाIt is non-terminating recurring

Step 1

Concept

The denominator has (7), and the numerator (1) cannot cancel it.

Step 2

Why this answer is correct

The reduced denominator has (7) besides (2) and (5), so the decimal is non-terminating recurring.

Step 3

Exam Tip

Having (2) and (5) in the denominator does not guarantee termination. चरण 1: हर में (7) है और अंश (1) होने से वह कट नहीं सकता। चरण 2: सरलतम हर में (2) और (5) के अलावा (7) बचता है, इसलिए दशमलव असांत आवर्ती होगा। चरण 3: (2) और (5) की मौजूदगी सांत होने की गारंटी नहीं देती।

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Question Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

एक भिन्न सरलतम रूप में \(\frac{p}{q}\) है और (q=72) है। उसके दशमलव प्रसार के बारे में क्या कहा जा सकता है?

A fraction in lowest form is \(\frac{p}{q}\) and (q=72). What can be said about its decimal expansion?

Explanation opens after your attempt
Correct Answer

B. असांत आवर्ती होगाIt will be non-terminating recurring

Step 1

Concept

Since \(\frac{p}{q}\) is already in lowest form, check (q) directly.

Step 2

Why this answer is correct

\(72=2^3\cdot 3^2\), which contains (3). So the decimal is non-terminating recurring.

Step 3

Exam Tip

If lowest form is stated, do not overthink the numerator. चरण 1: \(\frac{p}{q}\) सरलतम रूप में है, इसलिए (q) का गुणनखंड सीधे जाँचा जाएगा। चरण 2: \(72=2^3\cdot 3^2\), जिसमें (3) है। इसलिए दशमलव असांत आवर्ती होगा। चरण 3: सरलतम रूप दिया हो तो अंश को लेकर अलग भ्रम न रखें।

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Question Medium Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

यदि \(\frac{n}{36}\) सबसे सरल रूप में है और (n) का (36) से कोई सामान्य गुणनखंड नहीं है, तो दशमलव प्रसार कैसा होगा?

If \(\frac{n}{36}\) is in lowest form and (n) has no common factor with (36), what type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

B. असमाप्त आवर्तीNon-terminating recurring

Step 1

Concept

\(36=2^2\times3^2\).

Step 2

Why this answer is correct

Since the fraction is in lowest form, \(3^2\) remains in the denominator.

Step 3

Exam Tip

Exam tip: If factor (3) remains in the reduced denominator, the decimal does not terminate. चरण 1: \(36=2^2\times3^2\) है। चरण 2: भिन्न सबसे सरल रूप में है, इसलिए हर में \(3^2\) बचा रहेगा। चरण 3: परीक्षा सुझाव: सरल रूप में (3) बचने पर दशमलव समाप्त नहीं होता।

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Question Medium Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{63}{245}\) के दशमलव प्रसार के बारे में सही कथन कौन सा है?

Which statement is correct about the decimal expansion of \(\frac{63}{245}\)?

Explanation opens after your attempt
Correct Answer

B. यह असमाप्त आवर्ती है क्योंकि सरल रूप में हर में (5) के साथ (7) बचता हैIt is non-terminating recurring because the reduced denominator still has (7) with (5)

Step 1

Concept

\(\frac{63}{245}\) simplifies by (7) to \(\frac{9}{35}\).

Step 2

Why this answer is correct

Since \(35=5\times7\), factor (7) remains and the decimal will not terminate.

Step 3

Exam Tip

Exam tip: Having (5) in the denominator is not enough; only (2) and (5) should remain. चरण 1: \(\frac{63}{245}\) को (7) से सरल करने पर \(\frac{9}{35}\) मिलता है। चरण 2: \(35=5\times7\), इसलिए हर में (7) बचा है और दशमलव समाप्त नहीं होगा। चरण 3: परीक्षा सुझाव: हर में (5) होना पर्याप्त नहीं, केवल (2) और (5) ही होने चाहिए।

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Question Medium Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{72}{540}\) के दशमलव प्रसार के बारे में सही विकल्प चुनिए।

Choose the correct option about the decimal expansion of \(\frac{72}{540}\).

Explanation opens after your attempt
Correct Answer

B. असमाप्त आवर्तीNon-terminating recurring

Step 1

Concept

\(\frac{72}{540}\) simplifies by (36) to \(\frac{2}{15}\).

Step 2

Why this answer is correct

Since \(15=3\times5\), factor (3) remains in the denominator, so the decimal will not terminate.

Step 3

Exam Tip

Exam tip: If a factor other than (2) and (5) remains in the reduced denominator, the decimal is recurring. चरण 1: \(\frac{72}{540}\) को (36) से सरल करने पर \(\frac{2}{15}\) मिलता है। चरण 2: \(15=3\times5\), इसलिए हर में (3) बचता है और दशमलव समाप्त नहीं होगा। चरण 3: परीक्षा सुझाव: सरल रूप में (2) और (5) के अलावा कोई गुणनखंड हो तो दशमलव आवर्ती होता है।

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Question Medium Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{56}{180}\) का दशमलव प्रसार किस प्रकार का होगा?

What type of decimal expansion will \(\frac{56}{180}\) have?

Explanation opens after your attempt
Correct Answer

B. असमाप्त आवर्तीNon-terminating recurring

Step 1

Concept

\(\frac{56}{180}\) simplifies by (4) to \(\frac{14}{45}\).

Step 2

Why this answer is correct

Since \(45=3^2\times5\), the denominator still contains (3).

Step 3

Exam Tip

Exam tip: Even if (5) is present, a remaining factor (3) makes the decimal recurring. चरण 1: \(\frac{56}{180}\) को (4) से सरल करने पर \(\frac{14}{45}\) मिलता है। चरण 2: \(45=3^2\times5\), इसलिए हर में (3) भी है। चरण 3: परीक्षा सुझाव: (5) मौजूद होने पर भी यदि (3) बच जाए तो दशमलव समाप्त नहीं होता।

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Question Easy Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

यदि भिन्न सबसे सरल रूप में है, तो कौन सा हर असमाप्त आवर्ती दशमलव देगा?

If a fraction is in lowest form, which denominator will give a non-terminating recurring decimal?

Explanation opens after your attempt
Correct Answer

C. (14)

Step 1

Concept

Check the denominator of the fraction in lowest form.

Step 2

Why this answer is correct

\(14=2\times7\), and factor (7) prevents termination.

Step 3

Exam Tip

Exam tip: If (2) is joined by another prime like (7), the decimal will recur. चरण 1: सरल भिन्न में हर को जाँचते हैं। चरण 2: \(14=2\times7\), और (7) के कारण दशमलव समाप्त नहीं होगा। चरण 3: परीक्षा सुझाव: (2) के साथ कोई दूसरा अभाज्य जैसे (7) हो तो उत्तर आवर्ती होगा।

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Question Easy Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{8}{15}\) का दशमलव प्रसार कैसा होगा?

What type of decimal expansion does \(\frac{8}{15}\) have?

Explanation opens after your attempt
Correct Answer

B. असमाप्त आवर्तीNon-terminating recurring

Step 1

Concept

\(\frac{8}{15}\) is in lowest form.

Step 2

Why this answer is correct

\(15=3\times5\), and factor (3) prevents termination.

Step 3

Exam Tip

Exam tip: A denominator with (5) and also (3) gives a recurring decimal. चरण 1: \(\frac{8}{15}\) सबसे सरल रूप में है। चरण 2: \(15=3\times5\), और (3) के कारण दशमलव समाप्त नहीं होगा। चरण 3: परीक्षा सुझाव: (5) होने के साथ यदि (3) भी है, तो भिन्न आवर्ती बनती है।

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Question Easy Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{11}{30}\) के दशमलव प्रसार के बारे में सही विकल्प चुनिए।

Choose the correct option about the decimal expansion of \(\frac{11}{30}\).

Explanation opens after your attempt
Correct Answer

B. असमाप्त आवर्तीNon-terminating recurring

Step 1

Concept

\(\frac{11}{30}\) is in lowest form.

Step 2

Why this answer is correct

\(30=2\times3\times5\), and the denominator contains (3).

Step 3

Exam Tip

Exam tip: Even if (2) and (5) are present, an extra factor (3) prevents termination. चरण 1: \(\frac{11}{30}\) सबसे सरल रूप में है। चरण 2: \(30=2\times3\times5\), और हर में (3) है। चरण 3: परीक्षा सुझाव: (2) और (5) के साथ (3) भी हो तो दशमलव समाप्त नहीं होगा।

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Question Easy Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

किस हर वाली सरल भिन्न का दशमलव प्रसार निश्चित रूप से समाप्त होगा?

A fraction in lowest form with which denominator will surely have a terminating decimal expansion?

Explanation opens after your attempt
Correct Answer

C. (100)

Step 1

Concept

For a terminating decimal, the denominator must have only (2) and (5).

Step 2

Why this answer is correct

\(100=2^2\times5^2\), so it is suitable.

Step 3

Exam Tip

Exam tip: Denominators like (10), (100), and (1000) give terminating decimals. चरण 1: समाप्त दशमलव के लिए हर में केवल (2) और (5) होने चाहिए। चरण 2: \(100=2^2\times5^2\), इसलिए यह हर उपयुक्त है। चरण 3: परीक्षा सुझाव: (10), (100), (1000) जैसे हर समाप्त दशमलव देते हैं।

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Question Easy Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{5}{12}\) का दशमलव प्रसार असमाप्त आवर्ती क्यों है?

Why is the decimal expansion of \(\frac{5}{12}\) non-terminating recurring?

Explanation opens after your attempt
Correct Answer

A. क्योंकि (12) में (3) गुणनखंड हैBecause (12) has factor (3)

Step 1

Concept

\(\frac{5}{12}\) is already in lowest form.

Step 2

Why this answer is correct

\(12=2^2\times3\), and the factor (3) prevents termination.

Step 3

Exam Tip

Exam tip: A factor other than (2) or (5) gives a recurring decimal. चरण 1: \(\frac{5}{12}\) सबसे सरल रूप में है। चरण 2: \(12=2^2\times3\), और हर में (3) होने से दशमलव समाप्त नहीं होगा। चरण 3: परीक्षा सुझाव: (2) और (5) के अलावा कोई गुणनखंड हो तो आवर्ती दशमलव मिलता है।

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