Concept-wise Practice

decimal places MCQ Questions for Class 10

decimal places se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

113 questions tagged with decimal places.

Question 1/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{750}{2^6\cdot 3\cdot 5^5}\) 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।

Open Question Page
Ask Friends
Question 2/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

किसी भिन्न का सरलतम हर \(2^5\cdot 5^2\cdot 7^0\cdot 19^0\) है। दशमलव प्रसार कैसा होगा?

A fraction has reduced denominator \(2^5\cdot 5^2\cdot 7^0\cdot 19^0\). What type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

A. सांत और (5) स्थानों पर समाप्तTerminating after (5) places

Step 1

Concept

Both \(7^0\) and \(19^0\) equal (1), so the effective 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 A. सांत और (5) स्थानों पर समाप्त / Terminating after (5) places. Both \(7^0\) and \(19^0\) equal (1), so the effective denominator is \(2^5\cdot 5^2\). The larger exponent is (5), so the decimal terminates after (5) places.

Step 3

Exam Tip

\(7^0\) और \(19^0\) दोनों (1) हैं इसलिए प्रभावी हर \(2^5\cdot 5^2\) है। बड़ी घात (5) होने से दशमलव (5) स्थानों पर समाप्त होगा।

Open Question Page
Ask Friends
Question 3/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{243}{2^5\cdot 3^5\cdot 5^4}\) 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।

Open Question Page
Ask Friends
Question 4/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{2^5\cdot 5^2}{2^{10}\cdot 5^6}\) 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।

Open Question Page
Ask Friends
Question 5/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

यदि \(\frac{p}{q}\) सरलतम रूप में है और (q), \(10^{10}\) का भाजक है लेकिन \(10^8\) का भाजक नहीं है तो दशमलव स्थानों के बारे में क्या निश्चित है?

If \(\frac{p}{q}\) is in lowest form and (q) divides \(10^{10}\) but does not divide \(10^8\), what is certain about its decimal places?

Explanation opens after your attempt
Correct Answer

B. ठीक (9) या (10) स्थानExactly (9) or (10) places

Step 1

Concept

Since (q) has only (2) and (5), the decimal terminates. Not dividing \(10^8\) means the larger exponent is (9) or (10).

Step 2

Why this answer is correct

The correct answer is B. ठीक (9) या (10) स्थान / Exactly (9) or (10) places. Since (q) has only (2) and (5), the decimal terminates. Not dividing \(10^8\) means the larger exponent is (9) or (10).

Step 3

Exam Tip

(q) में केवल (2) और (5) होंगे इसलिए दशमलव सांत है। \(10^8\) का भाजक न होने से बड़ी घात (9) या (10) होगी।

Open Question Page
Ask Friends
Question 6/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{3^4\cdot 5^2}{2^7\cdot 3^4\cdot 5^5}\) 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।

Open Question Page
Ask Friends
Question 7/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{484}{2^4\cdot 5^3\cdot 11^2}\) 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।

Open Question Page
Ask Friends
Question 8/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

किसी भिन्न का सरलतम हर \(2^4\cdot 5^3\cdot 3^0\cdot 17^0\) है। दशमलव प्रसार कैसा होगा?

A fraction has reduced denominator \(2^4\cdot 5^3\cdot 3^0\cdot 17^0\). What type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

Both \(3^0\) and \(17^0\) equal (1), so the effective denominator is \(2^4\cdot 5^3\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 2

Why this answer is correct

The correct answer is A. सांत और (4) स्थानों पर समाप्त / Terminating after (4) places. Both \(3^0\) and \(17^0\) equal (1), so the effective denominator is \(2^4\cdot 5^3\). The larger exponent is (4), so the decimal terminates after (4) places.

Step 3

Exam Tip

\(3^0\) और \(17^0\) दोनों (1) हैं इसलिए प्रभावी हर \(2^4\cdot 5^3\) है। बड़ी घात (4) होने से दशमलव (4) स्थानों पर समाप्त होगा।

Open Question Page
Ask Friends
Question 9/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{81}{2^4\cdot 3^4\cdot 5^6}\) 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।

Open Question Page
Ask Friends
Question 10/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{2^4\cdot 5^3}{2^9\cdot 5^5}\) 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।

Open Question Page
Ask Friends
Question 11/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

यदि \(\frac{p}{q}\) सरलतम रूप में है और (q), \(10^9\) का भाजक है लेकिन \(10^7\) का भाजक नहीं है तो दशमलव स्थानों के बारे में क्या निश्चित है?

If \(\frac{p}{q}\) is in lowest form and (q) divides \(10^9\) but does not divide \(10^7\), what is certain about its decimal places?

Explanation opens after your attempt
Correct Answer

B. ठीक (8) या (9) स्थानExactly (8) or (9) places

Step 1

Concept

Since (q) has only (2) and (5), the decimal terminates. Not dividing \(10^7\) means the larger exponent is (8) or (9).

Step 2

Why this answer is correct

The correct answer is B. ठीक (8) या (9) स्थान / Exactly (8) or (9) places. Since (q) has only (2) and (5), the decimal terminates. Not dividing \(10^7\) means the larger exponent is (8) or (9).

Step 3

Exam Tip

(q) में केवल (2) और (5) होंगे इसलिए दशमलव सांत है। \(10^7\) का भाजक न होने से बड़ी घात (8) या (9) होगी।

Open Question Page
Ask Friends
Question 12/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{5^4\cdot 7}{2^6\cdot 5^7\cdot 7}\) 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।

Open Question Page
Ask Friends
Question 13/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{147}{2\cdot 3\cdot 5^4\cdot 7^2}\) 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।

Open Question Page
Ask Friends
Question 14/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{198}{2^2\cdot 3^2\cdot 5^5\cdot 11}\) 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।

Open Question Page
Ask Friends
Question 15/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{72}{2^3\cdot 3^2\cdot 5^5}\) 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।

Open Question Page
Ask Friends
Question 16/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

किसी भिन्न का सरलतम हर \(2^3\cdot 5^2\cdot 3^0\cdot 11^0\) है। दशमलव प्रसार कैसा होगा?

A fraction has reduced denominator \(2^3\cdot 5^2\cdot 3^0\cdot 11^0\). What type of decimal expansion will it have?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

Both \(3^0\) and \(11^0\) equal (1), so the effective denominator is \(2^3\cdot 5^2\). The larger exponent is (3), so the decimal terminates after (3) places.

Step 2

Why this answer is correct

The correct answer is A. सांत और (3) स्थानों पर समाप्त / Terminating after (3) places. Both \(3^0\) and \(11^0\) equal (1), so the effective denominator is \(2^3\cdot 5^2\). The larger exponent is (3), so the decimal terminates after (3) places.

Step 3

Exam Tip

\(3^0\) और \(11^0\) दोनों (1) हैं, इसलिए हर में केवल \(2^3\cdot 5^2\) प्रभावी है। बड़ी घात (3) है, इसलिए दशमलव (3) स्थानों पर समाप्त होगा।

Open Question Page
Ask Friends
Question 17/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{189}{2^2\cdot 3^3\cdot 5\cdot 7}\) 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।

Open Question Page
Ask Friends
Question 18/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{2^3\cdot 5^2}{2^7\cdot 5^5}\) 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।

Open Question Page
Ask Friends
Question 19/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

यदि \(\frac{p}{q}\) सरलतम रूप में है और (q), \(10^8\) का भाजक है लेकिन \(10^6\) का भाजक नहीं है, तो दशमलव स्थानों के बारे में निश्चित क्या कहा जा सकता है?

If \(\frac{p}{q}\) is in lowest form and (q) divides \(10^8\) but does not divide \(10^6\), what is certain about its decimal places?

Explanation opens after your attempt
Correct Answer

B. ठीक (7) या (8) स्थानExactly (7) or (8) places

Step 1

Concept

Since (q) has only (2) and (5), the decimal terminates. Not dividing \(10^6\) means the larger exponent is (7) or (8).

Step 2

Why this answer is correct

The correct answer is B. ठीक (7) या (8) स्थान / Exactly (7) or (8) places. Since (q) has only (2) and (5), the decimal terminates. Not dividing \(10^6\) means the larger exponent is (7) or (8).

Step 3

Exam Tip

(q) में केवल (2) और (5) हैं, इसलिए दशमलव सांत है। \(10^6\) का भाजक न होने से बड़ी घात (7) या (8) होगी।

Open Question Page
Ask Friends
Question 20/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{3^5}{2^2\cdot 3^4\cdot 5^6}\) 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।

Open Question Page
Ask Friends
Question 21/113 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{84}{2^3\cdot 3\cdot 5^2\cdot 7}\) 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।

Open Question Page
Ask Friends
Question 22/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{3^2\cdot 5}{2^6\cdot 3^2\cdot 5^4}\) 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।

Open Question Page
Ask Friends
Question 23/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{625}{2^8\cdot 5^6}\) 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।

Open Question Page
Ask Friends
Question 24/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{6}{375}\) को सरलतम रूप में लिखने पर दशमलव प्रसार कैसा होगा?

What type of decimal expansion will \(\frac{6}{375}\) have after reducing it to lowest form?

Explanation opens after your attempt
Correct Answer

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

Step 1

Concept

\(\frac{6}{375}=\frac{2}{125}\).

Step 2

Why this answer is correct

Since \(125=5^3\), the decimal terminates after (3) places.

Step 3

Exam Tip

Even for small fractions, reduce to lowest form first. चरण 1: \(\frac{6}{375}=\frac{2}{125}\) है। चरण 2: \(125=5^3\), इसलिए दशमलव (3) स्थानों पर समाप्त होगा। चरण 3: छोटी भिन्नों में भी सरलतम रूप निकालना जरूरी है।

Open Question Page
Ask Friends
Question 25/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{9}{15625}\) का दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

After how many decimal places will the decimal expansion of \(\frac{9}{15625}\) terminate?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

\(15625=5^6\).

Step 2

Why this answer is correct

The powers are (0) for (2) and (6) for (5). So the larger exponent is (6).

Step 3

Exam Tip

Practise identifying higher powers of (5). चरण 1: \(15625=5^6\) है। चरण 2: हर में (2) की घात (0) और (5) की घात (6) है। इसलिए बड़ी घात (6) होगी। चरण 3: (5) की बड़ी घातों को पहचानने का अभ्यास करें।

Open Question Page
Ask Friends
Question 26/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{225}{2^4\cdot 3^2\cdot 5^5}\) 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।

Open Question Page
Ask Friends
Question 27/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

किसी सरलतम भिन्न का हर \(2^a5^b\) है और उसका दशमलव ठीक (8) स्थानों पर समाप्त होता है। कौन-सा कथन अवश्य सत्य है?

A reduced fraction has denominator \(2^a5^b\), and its decimal terminates exactly after (8) places. Which statement must be true?

Explanation opens after your attempt
Correct Answer

B. (\max(a,b)=8)

Step 1

Concept

The denominator has only powers of (2) and (5), so the decimal terminates.

Step 2

Why this answer is correct

The number of decimal places equals the larger of (a) and (b). For exactly (8) places, (\max(a,b)=8).

Step 3

Exam Tip

Remember the larger exponent in such questions. चरण 1: हर केवल (2) और (5) की घातों से बना है, इसलिए दशमलव सांत है। चरण 2: दशमलव स्थानों की संख्या (a) और (b) में बड़ी घात के बराबर होती है। ठीक (8) स्थानों के लिए (\max(a,b)=8) होगा। चरण 3: ऐसे प्रश्न में अधिकतम घात याद रखें।

Open Question Page
Ask Friends
Question 28/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{42}{2^2\cdot 3\cdot 5^4\cdot 7}\) 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।

Open Question Page
Ask Friends
Question 29/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

सरलतम रूप में \(\frac{p}{q}\) के लिए \(q=2^7\cdot 5^2\) है। दशमलव प्रसार कितने स्थानों पर समाप्त होगा?

For \(\frac{p}{q}\) in lowest form, \(q=2^7\cdot 5^2\). After how many decimal places will the decimal expansion terminate?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

The reduced denominator contains only powers of (2) and (5).

Step 2

Why this answer is correct

The number of decimal places equals the larger exponent. Here the larger exponent is (7).

Step 3

Exam Tip

Do not add the exponents; use the larger one. चरण 1: सरलतम हर में केवल (2) और (5) की घातें हैं। चरण 2: सांत दशमलव के स्थान बड़ी घात के बराबर होते हैं। यहाँ बड़ी घात (7) है। चरण 3: घातों का योग नहीं, बड़ी घात देखिए।

Open Question Page
Ask Friends
Question 30/113 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

यदि किसी सरलतम भिन्न का हर \(2^4\cdot 5^2\) है, तो दशमलव प्रसार में कितने स्थान होंगे?

If the denominator of a reduced fraction is \(2^4\cdot 5^2\), how many decimal places will its decimal expansion have?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

The denominator has power (4) of (2) and power (2) of (5).

Step 2

Why this answer is correct

Decimal places in a terminating decimal equal the larger exponent, which is (4).

Step 3

Exam Tip

If the denominator is already reduced, do not assume further cancellation. चरण 1: हर में (2) की घात (4) और (5) की घात (2) है। चरण 2: सांत दशमलव के स्थान बड़ी घात के बराबर होते हैं, यानी (4)। चरण 3: सरलतम हर होने पर अंश से कोई और कटौती नहीं माननी चाहिए।

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.