Concept-wise Practice

numerator-adjustment MCQ Questions for Class 10

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

Practice Questions

11 questions tagged with numerator-adjustment.

Question 1/11 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{23}{2^5\cdot 5^9}\) को \(\frac{N}{10^9}\) के रूप में लिखने पर (N) क्या होगा?

If \(\frac{23}{2^5\cdot 5^9}\) is written as \(\frac{N}{10^9}\), what is (N)?

Explanation opens after your attempt
Correct Answer

B. (368)

Step 1

Concept

Since \(10^9=2^9\cdot 5^9\), the denominator lacks \(2^4\). Therefore \(N=23\cdot 16=368\).

Step 2

Why this answer is correct

The correct answer is B. (368). Since \(10^9=2^9\cdot 5^9\), the denominator lacks \(2^4\). Therefore \(N=23\cdot 16=368\).

Step 3

Exam Tip

\(10^9=2^9\cdot 5^9\) है इसलिए हर में \(2^4\) की कमी है। \(N=23\cdot 16=368\) होगा।

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Question 2/11 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{11}{2^8\cdot 5^5}\) को \(\frac{N}{10^8}\) में बदलने पर (N) क्या होगा?

When \(\frac{11}{2^8\cdot 5^5}\) is converted into \(\frac{N}{10^8}\), what is (N)?

Explanation opens after your attempt
Correct Answer

B. (1375)

Step 1

Concept

Since \(10^8=2^8\cdot 5^8\), the denominator lacks \(5^3\). Thus \(N=11\cdot 125=1375\).

Step 2

Why this answer is correct

The correct answer is B. (1375). Since \(10^8=2^8\cdot 5^8\), the denominator lacks \(5^3\). Thus \(N=11\cdot 125=1375\).

Step 3

Exam Tip

\(10^8=2^8\cdot 5^8\) है इसलिए हर में \(5^3\) की कमी है। \(N=11\cdot 125=1375\) होगा।

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Question 3/11 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{37}{2^4\cdot 5^8}\) को \(\frac{N}{10^8}\) के रूप में लिखने पर (N) क्या होगा?

If \(\frac{37}{2^4\cdot 5^8}\) is written as \(\frac{N}{10^8}\), what is (N)?

Explanation opens after your attempt
Correct Answer

B. (592)

Step 1

Concept

Since \(10^8=2^8\cdot 5^8\), the denominator lacks \(2^4\). Thus \(N=37\cdot 16=592\).

Step 2

Why this answer is correct

The correct answer is B. (592). Since \(10^8=2^8\cdot 5^8\), the denominator lacks \(2^4\). Thus \(N=37\cdot 16=592\).

Step 3

Exam Tip

\(10^8=2^8\cdot 5^8\) है इसलिए हर में \(2^4\) की कमी है। \(N=37\cdot 16=592\) होगा।

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Question 4/11 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{19}{2^5\cdot 5^2}\) को \(\frac{N}{10^5}\) के रूप में लिखने पर (N) क्या होगा?

If \(\frac{19}{2^5\cdot 5^2}\) is written as \(\frac{N}{10^5}\), what is (N)?

Explanation opens after your attempt
Correct Answer

C. (2375)

Step 1

Concept

Since \(10^5=2^5\cdot 5^5\), the denominator lacks \(5^3\). Therefore \(N=19\cdot 125=2375\); multiply by the missing factor when making a power of (10).

Step 2

Why this answer is correct

The correct answer is C. (2375). Since \(10^5=2^5\cdot 5^5\), the denominator lacks \(5^3\). Therefore \(N=19\cdot 125=2375\); multiply by the missing factor when making a power of (10).

Step 3

Exam Tip

\(10^5=2^5\cdot 5^5\) है इसलिए हर में \(5^3\) की कमी है। अतः \(N=19\cdot 125=2375\), हर को (10) की घात बनाते समय कमी वाले गुणनखंड से गुणा करें।

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Question 5/11 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{7}{2^6\cdot 5^4}\) को \(\frac{N}{10^6}\) में बदलने पर (N) क्या होगा?

When \(\frac{7}{2^6\cdot 5^4}\) is converted into \(\frac{N}{10^6}\), what is (N)?

Explanation opens after your attempt
Correct Answer

B. (175)

Step 1

Concept

Since \(10^6=2^6\cdot 5^6\), the denominator lacks \(5^2\). Thus \(N=7\cdot 25=175\).

Step 2

Why this answer is correct

The correct answer is B. (175). Since \(10^6=2^6\cdot 5^6\), the denominator lacks \(5^2\). Thus \(N=7\cdot 25=175\).

Step 3

Exam Tip

\(10^6=2^6\cdot 5^6\) है इसलिए हर में \(5^2\) की कमी है। \(N=7\cdot 25=175\) होगा।

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Question 6/11 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{13}{2^3\cdot 5^7}\) को \(\frac{N}{10^7}\) के रूप में लिखने पर (N) क्या होगा?

If \(\frac{13}{2^3\cdot 5^7}\) is written as \(\frac{N}{10^7}\), what is (N)?

Explanation opens after your attempt
Correct Answer

A. (104)

Step 1

Concept

Since \(10^7=2^7\cdot 5^7\), the denominator lacks \(2^4\). Thus \(N=13\cdot 16=208\), so the correct value is not listed.

Step 2

Why this answer is correct

The correct answer is A. (104). Since \(10^7=2^7\cdot 5^7\), the denominator lacks \(2^4\). Thus \(N=13\cdot 16=208\), so the correct value is not listed.

Step 3

Exam Tip

\(10^7=2^7\cdot 5^7\) है इसलिए हर में \(2^4\) की कमी है। \(N=13\cdot 16=208\) होगा इसलिए दिए विकल्पों में सही मान नहीं है।

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Question 7/11 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{3}{2^4\cdot 5^6}\) को \(\frac{N}{10^6}\) में बदलने पर (N) क्या होगा?

When \(\frac{3}{2^4\cdot 5^6}\) is converted into \(\frac{N}{10^6}\), what is (N)?

Explanation opens after your attempt
Correct Answer

B. (12)

Step 1

Concept

Since \(10^6=2^6\cdot 5^6\), the denominator lacks \(2^2\). Thus \(N=3\cdot 4=12\).

Step 2

Why this answer is correct

The correct answer is B. (12). Since \(10^6=2^6\cdot 5^6\), the denominator lacks \(2^2\). Thus \(N=3\cdot 4=12\).

Step 3

Exam Tip

\(10^6=2^6\cdot 5^6\), इसलिए हर में \(2^2\) की कमी है। \(N=3\cdot 4=12\) होगा।

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Question 8/11 Expert Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{11}{2^6\cdot 5^2}\) को \(\frac{N}{10^6}\) के रूप में लिखने पर (N) क्या होगा?

If \(\frac{11}{2^6\cdot 5^2}\) is written as \(\frac{N}{10^6}\), what is (N)?

Explanation opens after your attempt
Correct Answer

B. (1375)

Step 1

Concept

Since \(10^6=2^6\cdot 5^6\), the denominator lacks \(5^4\). Thus \(N=11\cdot 5^4=6875\), so the correct option is (6875).

Step 2

Why this answer is correct

The correct answer is B. (1375). Since \(10^6=2^6\cdot 5^6\), the denominator lacks \(5^4\). Thus \(N=11\cdot 5^4=6875\), so the correct option is (6875).

Step 3

Exam Tip

\(10^6=2^6\cdot 5^6\), इसलिए हर में \(5^4\) की कमी है। \(N=11\cdot 5^4=6875\), इसलिए सही विकल्प (6875) है।

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Question 9/11 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{7}{2^3\cdot 5^5}\) को \(\frac{N}{10^5}\) के रूप में लिखने पर (N) क्या होगा?

If \(\frac{7}{2^3\cdot 5^5}\) is written as \(\frac{N}{10^5}\), what is (N)?

Explanation opens after your attempt
Correct Answer

B. (28)

Step 1

Concept

We need \(10^5=2^5\cdot 5^5\).

Step 2

Why this answer is correct

The denominator \(2^3\cdot 5^5\) lacks \(2^2\). Multiplying numerator and denominator by (4) gives \(N=7\cdot 4=28\).

Step 3

Exam Tip

Multiply by the missing part to make the denominator \(10^k\). चरण 1: \(10^5=2^5\cdot 5^5\) चाहिए। चरण 2: हर \(2^3\cdot 5^5\) में \(2^2\) की कमी है। अंश और हर को (4) से गुणा करने पर \(N=7\cdot 4=28\)। चरण 3: हर को \(10^k\) बनाने के लिए कमी वाले भाग से गुणा करें।

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Question 10/11 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{17}{2^2\cdot 5^6}\) को \(\frac{N}{10^6}\) के रूप में लिखा जाए, तो (N) क्या होगा?

If \(\frac{17}{2^2\cdot 5^6}\) is written as \(\frac{N}{10^6}\), what is (N)?

Explanation opens after your attempt
Correct Answer

C. (272)

Step 1

Concept

We need \(10^6=2^6\cdot 5^6\).

Step 2

Why this answer is correct

The denominator \(2^2\cdot 5^6\) lacks \(2^4\), so multiply numerator and denominator by (16). Thus \(N=17\cdot 16=272\).

Step 3

Exam Tip

Multiply by the missing prime power. चरण 1: \(10^6=2^6\cdot 5^6\) चाहिए। चरण 2: हर \(2^2\cdot 5^6\) में \(2^4\) की कमी है, इसलिए अंश और हर को (16) से गुणा करेंगे। \(N=17\cdot 16=272\)। चरण 3: कमी वाले अभाज्य गुणनखंड से ही गुणा करें।

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Question 11/11 Hard Mathematics Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

किसी भिन्न का सरलतम रूप \(\frac{p}{2^3\cdot 5^5}\) है। यदि इसे \(\frac{N}{10^5}\) के रूप में लिखा जाए, तो (N) किसके बराबर होगा?

A fraction in lowest form is \(\frac{p}{2^3\cdot 5^5}\). If it is written as \(\frac{N}{10^5}\), what is (N)?

Explanation opens after your attempt
Correct Answer

B. (4p)

Step 1

Concept

We need \(10^5=2^5\cdot 5^5\).

Step 2

Why this answer is correct

The denominator \(2^3\cdot 5^5\) lacks \(2^2\). So multiply numerator and denominator by \(2^2=4\). Hence (N=4p).

Step 3

Exam Tip

To make \(10^k\), multiply by the missing prime power. चरण 1: \(10^5=2^5\cdot 5^5\) चाहिए। चरण 2: हर \(2^3\cdot 5^5\) में \(2^2\) की कमी है। इसलिए अंश और हर को \(2^2=4\) से गुणा करेंगे। अतः (N=4p)। चरण 3: \(10^k\) बनाने के लिए जिस घात की कमी हो, वही गुणा करें।

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