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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

यदि कोई दशमलव अनंत और आवर्ती है तो वह किस प्रकार की संख्या है?

If a decimal is non terminating and repeating, what type of number is it?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

A non terminating repeating decimal is rational. Do not call it irrational only because it is infinite.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. A non terminating repeating decimal is rational. Do not call it irrational only because it is infinite.

Step 3

Exam Tip

अनंत आवर्ती दशमलव परिमेय होता है। केवल अनंत देखकर उसे अपरिमेय न मानें।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

यदि कोई दशमलव अनंत और अनावर्ती है तो वह किस प्रकार की संख्या है?

If a decimal is non terminating and non repeating, what type of number is it?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

A non terminating and non repeating decimal identifies an irrational number. Check carefully if no repeating block appears.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. A non terminating and non repeating decimal identifies an irrational number. Check carefully if no repeating block appears.

Step 3

Exam Tip

अनंत और अनावर्ती दशमलव अपरिमेय संख्या की पहचान है। आवर्ती भाग न दिखे तो सावधानी से जाँचें।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

यदि कोई दशमलव सांत या आवर्ती है तो वह किस प्रकार की संख्या है?

If a decimal is terminating or repeating, what type of number is it?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

The decimal expansion of a rational number is terminating or repeating. This identification is very important.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. The decimal expansion of a rational number is terminating or repeating. This identification is very important.

Step 3

Exam Tip

परिमेय संख्या का दशमलव प्रसार सांत या आवर्ती होता है। यह पहचान बहुत महत्वपूर्ण है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि कोई संख्या सांत या आवर्ती दशमलव है तो वह कैसी संख्या होगी?

If a number has a terminating or repeating decimal, what type of number will it be?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

The decimal expansion of rational numbers is terminating or repeating. This identification is very useful in exams.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. The decimal expansion of rational numbers is terminating or repeating. This identification is very useful in exams.

Step 3

Exam Tip

परिमेय संख्याओं का दशमलव विस्तार सांत या आवर्ती होता है। यह पहचान परीक्षा में बहुत काम आती है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा विकल्प अनंत आवर्ती दशमलव है?

Which option is a non terminating repeating decimal?

Explanation opens after your attempt
Correct Answer

A. (1.272727...)

Step 1

Concept

The block (27) repeats so it is a repeating decimal. A repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. (1.272727...). The block (27) repeats so it is a repeating decimal. A repeating decimal is rational.

Step 3

Exam Tip

(27) बार बार दोहर रहा है इसलिए यह आवर्ती दशमलव है। आवर्ती दशमलव परिमेय होता है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा विकल्प अनंत लेकिन आवर्ती दशमलव है?

Which option is a non terminating but repeating decimal?

Explanation opens after your attempt
Correct Answer

A. (4.565656...)

Step 1

Concept

The block (56) repeats so it is a repeating decimal. A repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. (4.565656...). The block (56) repeats so it is a repeating decimal. A repeating decimal is rational.

Step 3

Exam Tip

(56) बार-बार दोहर रहा है इसलिए यह आवर्ती दशमलव है। आवर्ती दशमलव परिमेय होता है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा दशमलव अनंत और अनावर्ती है?

Which decimal is non terminating and non repeating?

Explanation opens after your attempt
Correct Answer

A. (0.2020020002...)

Step 1

Concept

(0.2020020002...) has no fixed repetition. A non terminating and non repeating decimal is irrational.

Step 2

Why this answer is correct

The correct answer is A. (0.2020020002...). (0.2020020002...) has no fixed repetition. A non terminating and non repeating decimal is irrational.

Step 3

Exam Tip

(0.2020020002...) में कोई स्थायी दोहराव नहीं है। अनंत और अनावर्ती दशमलव अपरिमेय होता है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि किसी संख्या का दशमलव प्रसार अनंत लेकिन आवर्ती है तो वह कैसी संख्या है?

If the decimal expansion of a number is non terminating but repeating then what type of number is it?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

A non terminating repeating decimal is rational. Do not call it irrational just because it is non terminating.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. A non terminating repeating decimal is rational. Do not call it irrational just because it is non terminating.

Step 3

Exam Tip

अनंत आवर्ती दशमलव परिमेय होता है। अनंत देखकर तुरंत अपरिमेय न मानें।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

दशमलव (0.1010010001...) जिसमें कोई निश्चित आवर्ती क्रम नहीं है किस प्रकार की संख्या है?

The decimal (0.1010010001...) with no fixed repeating pattern is what type of number?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

A non terminating non repeating decimal is irrational. In exams always check the repeating pattern.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. A non terminating non repeating decimal is irrational. In exams always check the repeating pattern.

Step 3

Exam Tip

अनावर्ती और अनंत दशमलव अपरिमेय होता है। परीक्षा में आवर्ती पैटर्न जरूर देखें।

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

\(\frac{1}{2^3\cdot 5^4\cdot 19^2}\) के दशमलव में आवर्ती भाग से पहले कितने अनावर्ती अंक आएँगे?

In the decimal expansion of \(\frac{1}{2^3\cdot 5^4\cdot 19^2}\), how many non-repeating digits appear before the recurring part?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

Since \(19^2\) remains, the decimal is non-terminating recurring, and the larger exponent among (2) and (5) is (4). In such questions, separate recurrence from the initial delay.

Step 2

Why this answer is correct

The correct answer is B. (4). Since \(19^2\) remains, the decimal is non-terminating recurring, and the larger exponent among (2) and (5) is (4). In such questions, separate recurrence from the initial delay.

Step 3

Exam Tip

\(19^2\) बचने से दशमलव असांत आवर्ती होगा और (2), (5) की बड़ी घात (4) आरंभिक अनावर्ती भाग देगी। ऐसे प्रश्न में आवर्तीपन और आरंभिक देरी अलग-अलग देखें।

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

\(\frac{1}{192}\), \(\frac{1}{225}\), \(\frac{1}{448}\), \(\frac{1}{350}\) में किसमें आवर्ती भाग से पहले सबसे अधिक अनावर्ती अंक होंगे?

Among \(\frac{1}{192}\), \(\frac{1}{225}\), \(\frac{1}{448}\), and \(\frac{1}{350}\), which has the most non-repeating digits before the recurring part?

Explanation opens after your attempt
Correct Answer

C. \(\frac{1}{448}\)

Step 1

Concept

\(448=2^6\cdot 7\), so (6) non-repeating digits appear before the recurring part. For comparison, check the larger power of (2) and (5).

Step 2

Why this answer is correct

The correct answer is C. \(\frac{1}{448}\). \(448=2^6\cdot 7\), so (6) non-repeating digits appear before the recurring part. For comparison, check the larger power of (2) and (5).

Step 3

Exam Tip

\(448=2^6\cdot 7\) है इसलिए आवर्ती भाग से पहले (6) अनावर्ती अंक आएँगे। तुलना में (2) और (5) की बड़ी घात देखें।

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

\(\frac{1}{2^7\cdot 5^3\cdot 41}\) के दशमलव में आवर्ती भाग से पहले कितने अनावर्ती अंक होंगे?

In the decimal expansion of \(\frac{1}{2^7\cdot 5^3\cdot 41}\), how many non-repeating digits appear before the recurring part?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

The factor (41) makes the decimal recurring, and the larger exponent of (2) and (5) is (7), giving the non-repeating start. In mixed denominators, the larger exponent gives the delay.

Step 2

Why this answer is correct

The correct answer is C. (7). The factor (41) makes the decimal recurring, and the larger exponent of (2) and (5) is (7), giving the non-repeating start. In mixed denominators, the larger exponent gives the delay.

Step 3

Exam Tip

(41) के कारण दशमलव आवर्ती होगा और (2), (5) की बड़ी घात (7) अनावर्ती आरंभ देगी। मिश्रित हर में बड़ी घात से देरी मिलती है।

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

\(\frac{1}{2^4\cdot 5^6\cdot 17}\) में आवर्ती भाग शुरू होने से पहले कितने अनावर्ती दशमलव अंक आएँगे?

In \(\frac{1}{2^4\cdot 5^6\cdot 17}\), how many non-repeating decimal digits appear before the recurring part starts?

Explanation opens after your attempt
Correct Answer

B. (6)

Step 1

Concept

The factor (17) makes the decimal recurring, and the larger exponent among (2) and (5) is (6), giving the initial non-repeating part. Understand recurrence and delay separately.

Step 2

Why this answer is correct

The correct answer is B. (6). The factor (17) makes the decimal recurring, and the larger exponent among (2) and (5) is (6), giving the initial non-repeating part. Understand recurrence and delay separately.

Step 3

Exam Tip

(17) के कारण दशमलव आवर्ती होगा और (2), (5) की बड़ी घात (6) आरंभिक अनावर्ती भाग देगी। आवर्तीपन और आरंभिक देरी को अलग-अलग समझें।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{1}{96}\), \(\frac{1}{175}\), \(\frac{1}{224}\), \(\frac{1}{250}\) में किसमें आवर्ती भाग से पहले सबसे अधिक अनावर्ती अंक होंगे?

Among \(\frac{1}{96}\), \(\frac{1}{175}\), \(\frac{1}{224}\), and \(\frac{1}{250}\), which has the most non-repeating digits before the recurring part?

Explanation opens after your attempt
Correct Answer

C. \(\frac{1}{224}\)

Step 1

Concept

\(224=2^5\cdot 7\), so (5) non-repeating digits appear before the recurring part. For comparison, check the larger power of (2) and (5).

Step 2

Why this answer is correct

The correct answer is C. \(\frac{1}{224}\). \(224=2^5\cdot 7\), so (5) non-repeating digits appear before the recurring part. For comparison, check the larger power of (2) and (5).

Step 3

Exam Tip

\(224=2^5\cdot 7\) है इसलिए आवर्ती भाग से पहले (5) अनावर्ती अंक आएँगे। तुलना में (2) और (5) की बड़ी घात देखें।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{1}{2^6\cdot 5^2\cdot 31}\) के दशमलव में आवर्ती भाग से पहले कितने अनावर्ती अंक होंगे?

In the decimal expansion of \(\frac{1}{2^6\cdot 5^2\cdot 31}\), how many non-repeating digits appear before the recurring part?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

The factor (31) makes the decimal recurring, and the larger exponent of (2) and (5) is (6), giving the non-repeating start. In mixed denominators, the larger exponent gives the delay.

Step 2

Why this answer is correct

The correct answer is C. (6). The factor (31) makes the decimal recurring, and the larger exponent of (2) and (5) is (6), giving the non-repeating start. In mixed denominators, the larger exponent gives the delay.

Step 3

Exam Tip

(31) के कारण दशमलव आवर्ती होगा और (2), (5) की बड़ी घात (6) अनावर्ती आरंभ देगी। मिश्रित हर में बड़ी घात से देरी मिलती है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(\frac{1}{2^2\cdot 5^5\cdot 13}\) में आवर्ती भाग शुरू होने से पहले कितने अनावर्ती दशमलव अंक आएँगे?

In \(\frac{1}{2^2\cdot 5^5\cdot 13}\), how many non-repeating decimal digits appear before the recurring part starts?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

The factor (13) makes the decimal recurring, and the larger exponent among (2) and (5) is (5), giving the initial non-repeating part. Understand recurrence and delay separately.

Step 2

Why this answer is correct

The correct answer is B. (5). The factor (13) makes the decimal recurring, and the larger exponent among (2) and (5) is (5), giving the initial non-repeating part. Understand recurrence and delay separately.

Step 3

Exam Tip

(13) के कारण दशमलव आवर्ती होगा और (2), (5) की बड़ी घात (5) आरंभिक अनावर्ती भाग देगी। आवर्तीपन और आरंभिक देरी को अलग-अलग समझें।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{1}{48}\), \(\frac{1}{75}\), \(\frac{1}{112}\), \(\frac{1}{150}\) में किसमें आवर्ती भाग से पहले सबसे अधिक अनावर्ती अंक होंगे?

Among \(\frac{1}{48}\), \(\frac{1}{75}\), \(\frac{1}{112}\), and \(\frac{1}{150}\), which has the most non-repeating digits before the recurring part?

Explanation opens after your attempt
Correct Answer

C. \(\frac{1}{112}\)

Step 1

Concept

\(112=2^4\cdot 7\), so (4) non-repeating digits appear before the recurring part. For comparison, check the larger power of (2) and (5).

Step 2

Why this answer is correct

The correct answer is C. \(\frac{1}{112}\). \(112=2^4\cdot 7\), so (4) non-repeating digits appear before the recurring part. For comparison, check the larger power of (2) and (5).

Step 3

Exam Tip

\(112=2^4\cdot 7\), इसलिए आवर्ती भाग से पहले (4) अनावर्ती अंक आएँगे। तुलना में (2) और (5) की बड़ी घात देखें।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{1}{2^4\cdot 5^3\cdot 37}\) के दशमलव में आवर्ती भाग से पहले कितने अनावर्ती अंक होंगे?

In the decimal expansion of \(\frac{1}{2^4\cdot 5^3\cdot 37}\), how many non-repeating digits appear before the recurring part?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

The factor (37) makes the decimal recurring, and the larger exponent of (2) and (5) is (4), giving the non-repeating start. In mixed denominators, the larger exponent gives the delay.

Step 2

Why this answer is correct

The correct answer is B. (4). The factor (37) makes the decimal recurring, and the larger exponent of (2) and (5) is (4), giving the non-repeating start. In mixed denominators, the larger exponent gives the delay.

Step 3

Exam Tip

(37) के कारण दशमलव आवर्ती होगा और (2), (5) की बड़ी घात (4) अनावर्ती आरंभ देगी। ऐसे मिश्रित हर में बड़ी घात से देरी मिलती है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(\frac{1}{2^3\cdot 5^2\cdot 7^2}\) में आवर्ती भाग शुरू होने से पहले कितने अनावर्ती दशमलव अंक आएँगे?

In \(\frac{1}{2^3\cdot 5^2\cdot 7^2}\), how many non-repeating decimal digits will appear before the recurring part starts?

Explanation opens after your attempt
Correct Answer

B. (3)

Step 1

Concept

The factor \(7^2\) makes the decimal recurring, and the larger exponent among (2) and (5) is (3), giving the non-repeating start. In exams, separate recurrence from the initial delay.

Step 2

Why this answer is correct

The correct answer is B. (3). The factor \(7^2\) makes the decimal recurring, and the larger exponent among (2) and (5) is (3), giving the non-repeating start. In exams, separate recurrence from the initial delay.

Step 3

Exam Tip

हर में \(7^2\) होने से दशमलव आवर्ती होगा और (2), (5) की बड़ी घात (3) आरंभिक अनावर्ती भाग देती है। परीक्षा में आवर्तीपन और आरंभिक देरी को अलग-अलग पहचानें।

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Question Hard Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

यदि किसी दशमलव में \(0.357357357\ldots\) जैसा स्थिर आवर्ती खंड है, तो वह किस प्रकार की संख्या है?

If a decimal has a fixed repeating block like \(0.357357357\ldots\), what type of number is it?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

The block (357) repeats in a fixed way.

Step 2

Why this answer is correct

A fixed recurring decimal can always be written as a rational number.

Step 3

Exam Tip

Identify rationality when a repeating block is fixed. चरण 1: (357) खंड बार-बार समान रूप से दोहर रहा है। चरण 2: स्थिर आवर्ती दशमलव हमेशा परिमेय संख्या के रूप में लिखा जा सकता है। चरण 3: आवर्ती खंड देखकर तुरंत परिमेयता पहचानें।

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Question Hard Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(\frac{1}{18}\), \(\frac{1}{45}\), \(\frac{1}{72}\), \(\frac{1}{90}\) में किसमें आवर्ती भाग से पहले सबसे अधिक अनावर्ती अंक आएँगे?

Among \(\frac{1}{18}\), \(\frac{1}{45}\), \(\frac{1}{72}\), and \(\frac{1}{90}\), which has the most non-repeating digits before the recurring part?

Explanation opens after your attempt
Correct Answer

C. \(\frac{1}{72}\)

Step 1

Concept

The larger power of (2) or (5) in the denominator tells the delay before the recurring part starts.

Step 2

Why this answer is correct

\(72=2^3\cdot 3^2\), so it has a delay of (3) places. The others have larger exponent (1) or (2).

Step 3

Exam Tip

Understand the initial non-repeating part in non-terminating recurring decimals. चरण 1: हर में (2) और (5) की बड़ी घात आवर्ती भाग शुरू होने की देरी बताती है। चरण 2: \(72=2^3\cdot 3^2\), इसलिए इसमें देरी (3) स्थानों की होगी। बाकी में बड़ी घात (1) या (2) है। चरण 3: असांत आवर्ती दशमलव में आरंभिक अनावर्ती भाग को भी समझें।

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Question Hard Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

किस भिन्न में आवर्ती भाग शुरू होने से पहले ठीक दो अनावर्ती दशमलव अंक आएँगे?

In which fraction will exactly two non-repeating decimal digits appear before the recurring part begins?

Explanation opens after your attempt
Correct Answer

B. \(\frac{1}{28}\)

Step 1

Concept

View the denominator in terms of (2), (5), and other factors.

Step 2

Why this answer is correct

\(28=2^2\cdot 7\), so the power (2) of (2) gives a delay of two places before the recurring part starts. The other options give a delay of (1) or a different case.

Step 3

Exam Tip

The delay before repetition is linked to the larger power of (2) and (5). चरण 1: हर को (2), (5) और बाकी गुणनखंडों में देखें। चरण 2: \(28=2^2\cdot 7\), इसलिए (2) की घात (2) आवर्ती भाग शुरू होने से पहले दो स्थानों की देरी देती है। बाकी विकल्पों में देरी (1) या अलग होती है। चरण 3: आवर्ती भाग की देरी (2) और (5) की बड़ी घात से जुड़ती है।

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Question Hard Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

किस भिन्न में आवर्ती भाग दशमलव बिंदु के तुरंत बाद शुरू होगा?

In which fraction will the repeating part start immediately after the decimal point?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{7}\)

Step 1

Concept

The denominator of \(\frac{1}{7}\) has no factor (2) or (5), so the repeating part starts immediately.

Step 2

Why this answer is correct

(14), (28), and (35) also contain (2) or (5), so a non-repeating part comes first.

Step 3

Exam Tip

Factors (2) or (5) can delay the start of the recurring part. चरण 1: \(\frac{1}{7}\) के हर में (2) या (5) नहीं है, इसलिए आवर्ती भाग तुरंत शुरू होता है। चरण 2: (14), (28), और (35) में (2) या (5) भी हैं, इसलिए आवर्ती भाग से पहले कुछ सांत भाग आता है। चरण 3: हर में (2) या (5) की उपस्थिति आवर्ती भाग को आगे खिसका सकती है।

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Question Hard Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि \(z=\sqrt[3]{9}\) है तो \(z^3\) किस प्रकार की संख्या है?

If \(z=\sqrt[3]{9}\), what type of number is \(z^3\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

Cubing gives \(z^3=9\). Even if (z) is irrational, its cube here is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. Cubing gives \(z^3=9\). Even if (z) is irrational, its cube here is rational.

Step 3

Exam Tip

घन करने पर \(z^3=9\) मिलता है। भले (z) अपरिमेय हो, उसका घन यहाँ परिमेय है।

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Question Hard Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा विकल्प (0.101001000100001...) की प्रकृति सही बताता है?

Which option correctly describes the nature of (0.101001000100001...)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

The decimal is infinite and has no fixed repeating block. Therefore it is irrational.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. The decimal is infinite and has no fixed repeating block. Therefore it is irrational.

Step 3

Exam Tip

दशमलव अनंत है और दोहरने वाला निश्चित समूह नहीं है। इसलिए यह अपरिमेय संख्या है।

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Question Hard Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि \(a=\sqrt{8}+\sqrt{18}\) है तो (a) का वर्ग किस प्रकार की संख्या है?

If \(a=\sqrt{8}+\sqrt{18}\), what type of number is \(a^2\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

\(\sqrt{8}=2\sqrt{2}\) and \(\sqrt{18}=3\sqrt{2}\), so \(a=5\sqrt{2}\). Its square is (50), a rational number.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. \(\sqrt{8}=2\sqrt{2}\) and \(\sqrt{18}=3\sqrt{2}\), so \(a=5\sqrt{2}\). Its square is (50), a rational number.

Step 3

Exam Tip

\(\sqrt{8}=2\sqrt{2}\) और \(\sqrt{18}=3\sqrt{2}\), इसलिए \(a=5\sqrt{2}\)। इसका वर्ग (50) परिमेय है।

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Question Hard Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि \(x=\sqrt{5}+\sqrt{2}\) है तो \(x^2-2\sqrt{10}\) किस प्रकार की संख्या है?

If \(x=\sqrt{5}+\sqrt{2}\), what type of number is \(x^2-2\sqrt{10}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

Here \(x^2=7+2\sqrt{10}\), so subtracting gives (7). In such questions expand the square first.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. Here \(x^2=7+2\sqrt{10}\), so subtracting gives (7). In such questions expand the square first.

Step 3

Exam Tip

\(x^2=7+2\sqrt{10}\) इसलिए घटाने पर (7) मिलता है। ऐसे प्रश्नों में पहले वर्ग विस्तार करें।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा विकल्प (9.0202202220...) के बारे में सही है?

Which option is correct about (9.0202202220...)?

Explanation opens after your attempt
Correct Answer

A. यह अपरिमेय संख्या हैIt is an irrational number

Step 1

Concept

The decimal is infinite and has no fixed repeating block. So it is an irrational number.

Step 2

Why this answer is correct

The correct answer is A. यह अपरिमेय संख्या है / It is an irrational number. The decimal is infinite and has no fixed repeating block. So it is an irrational number.

Step 3

Exam Tip

दशमलव अनंत है और इसमें कोई निश्चित आवर्ती समूह नहीं है। इसलिए यह अपरिमेय संख्या है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा विकल्प \(\sqrt[3]{343}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(\sqrt[3]{343}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

\(\sqrt[3]{343}=7\), which is rational. The cube root of a perfect cube is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. \(\sqrt[3]{343}=7\), which is rational. The cube root of a perfect cube is rational.

Step 3

Exam Tip

\(\sqrt[3]{343}=7\) है जो परिमेय है। पूर्ण घन की घनमूल परिमेय होती है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा विकल्प (8.01011011101111...) के बारे में सही है?

Which option is correct about (8.01011011101111...)?

Explanation opens after your attempt
Correct Answer

A. यह अपरिमेय संख्या हैIt is an irrational number

Step 1

Concept

This decimal has no fixed repeating block. So it is non terminating and non repeating.

Step 2

Why this answer is correct

The correct answer is A. यह अपरिमेय संख्या है / It is an irrational number. This decimal has no fixed repeating block. So it is non terminating and non repeating.

Step 3

Exam Tip

इस दशमलव में निश्चित आवर्ती समूह नहीं है। इसलिए यह अनंत और अनावर्ती है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा विकल्प \(0.\overline{09}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(0.\overline{09}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

The bar shows repetition of (09). Every recurring decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. The bar shows repetition of (09). Every recurring decimal is rational.

Step 3

Exam Tip

ऊपर की रेखा (09) के आवर्तन को बताती है। हर आवर्ती दशमलव परिमेय होता है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा विकल्प परिमेय संख्या दर्शाता है?

Which option represents a rational number?

Explanation opens after your attempt
Correct Answer

A. \(7.\overline{125}\)

Step 1

Concept

The bar shows repetition of (125). A repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. \(7.\overline{125}\). The bar shows repetition of (125). A repeating decimal is rational.

Step 3

Exam Tip

ऊपर की रेखा (125) के आवर्तन को बताती है। आवर्ती दशमलव परिमेय होता है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

कौन सा विकल्प \(\sqrt[3]{216}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(\sqrt[3]{216}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

\(\sqrt[3]{216}=6\), which is rational. The cube root of a perfect cube is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. \(\sqrt[3]{216}=6\), which is rational. The cube root of a perfect cube is rational.

Step 3

Exam Tip

\(\sqrt[3]{216}=6\) है जो परिमेय है। पूर्ण घन की घनमूल परिमेय होती है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

कौन सा विकल्प \(\sqrt[3]{125}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(\sqrt[3]{125}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

\(\sqrt[3]{125}=5\), which is rational. The cube root of a perfect cube is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. \(\sqrt[3]{125}=5\), which is rational. The cube root of a perfect cube is rational.

Step 3

Exam Tip

\(\sqrt[3]{125}=5\) है जो परिमेय है। पूर्ण घन की घनमूल परिमेय होती है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

कौन सा विकल्प (3.010010001...) के बारे में सही है?

Which option is correct about (3.010010001...)?

Explanation opens after your attempt
Correct Answer

A. यह अपरिमेय संख्या हैIt is an irrational number

Step 1

Concept

The decimal is infinite and has no fixed repeating block. So it is irrational.

Step 2

Why this answer is correct

The correct answer is A. यह अपरिमेय संख्या है / It is an irrational number. The decimal is infinite and has no fixed repeating block. So it is irrational.

Step 3

Exam Tip

दशमलव अनंत है और कोई निश्चित आवर्ती समूह नहीं है। इसलिए यह अपरिमेय है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

कौन सा विकल्प \(0.\overline{123}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(0.\overline{123}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

The bar shows repetition of (123). A repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. The bar shows repetition of (123). A repeating decimal is rational.

Step 3

Exam Tip

ऊपर की रेखा (123) के आवर्तन को बताती है। आवर्ती दशमलव परिमेय होता है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

यदि \(x=\sqrt{17}\) है तो \(x^2-5\) किस प्रकार की संख्या है?

If \(x=\sqrt{17}\), what type of number is \(x^2-5\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

Here \(x^2=17\), so \(x^2-5=12\). This is a rational number.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. Here \(x^2=17\), so \(x^2-5=12\). This is a rational number.

Step 3

Exam Tip

\(x^2=17\) इसलिए \(x^2-5=12\) है। यह परिमेय संख्या है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा विकल्प (0.2020020002...) के बारे में सही है?

Which option is correct about (0.2020020002...)?

Explanation opens after your attempt
Correct Answer

A. यह अपरिमेय संख्या हैIt is an irrational number

Step 1

Concept

It has no fixed repeating block and the decimal is infinite. So it is irrational.

Step 2

Why this answer is correct

The correct answer is A. यह अपरिमेय संख्या है / It is an irrational number. It has no fixed repeating block and the decimal is infinite. So it is irrational.

Step 3

Exam Tip

इसमें कोई निश्चित आवर्ती समूह नहीं है और दशमलव अनंत है। इसलिए यह अपरिमेय है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा विकल्प \(\sqrt[3]{64}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(\sqrt[3]{64}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

\(\sqrt[3]{64}=4\), which is rational. The cube root of a perfect cube is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. \(\sqrt[3]{64}=4\), which is rational. The cube root of a perfect cube is rational.

Step 3

Exam Tip

\(\sqrt[3]{64}=4\) है जो परिमेय है। पूर्ण घन की घनमूल परिमेय होती है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा विकल्प \(2.\overline{45}\) की प्रकृति सही बताता है?

Which option correctly describes the nature of \(2.\overline{45}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

The bar shows repetition of (45). Every repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. The bar shows repetition of (45). Every repeating decimal is rational.

Step 3

Exam Tip

ऊपर की रेखा (45) के आवर्तन को दिखाती है। हर आवर्ती दशमलव परिमेय होता है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि \(x=0.\overline{12}\) है तो (x) किस प्रकार की संख्या है?

If \(x=0.\overline{12}\), what type of number is (x)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

The bar shows that (12) repeats. A repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. The bar shows that (12) repeats. A repeating decimal is rational.

Step 3

Exam Tip

ऊपर की रेखा बताती है कि (12) दोहरता है। आवर्ती दशमलव परिमेय होता है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा दशमलव अपरिमेय संख्या दिखाता है?

Which decimal shows an irrational number?

Explanation opens after your attempt
Correct Answer

A. (0.3030030003...)

Step 1

Concept

The first decimal is non terminating and non repeating. A non terminating non repeating decimal is irrational.

Step 2

Why this answer is correct

The correct answer is A. (0.3030030003...). The first decimal is non terminating and non repeating. A non terminating non repeating decimal is irrational.

Step 3

Exam Tip

पहला दशमलव अनंत और अनावर्ती है। अनंत अनावर्ती दशमलव अपरिमेय होता है।

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Question Medium Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

यदि \(x=\sqrt{11}\) है तो \(x^2+1\) का मान किस प्रकार की संख्या है?

If \(x=\sqrt{11}\), what type of number is \(x^2+1\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

Here \(x^2=11\), so \(x^2+1=12\). This is a rational number.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. Here \(x^2=11\), so \(x^2+1=12\). This is a rational number.

Step 3

Exam Tip

\(x^2=11\) इसलिए \(x^2+1=12\) है। यह परिमेय संख्या है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा दशमलव परिमेय संख्या नहीं दिखाता?

Which decimal does not represent a rational number?

Explanation opens after your attempt
Correct Answer

A. (6.1010010001...)

Step 1

Concept

The first decimal is non terminating and non repeating so it is irrational. Terminating or repeating decimals are rational.

Step 2

Why this answer is correct

The correct answer is A. (6.1010010001...). The first decimal is non terminating and non repeating so it is irrational. Terminating or repeating decimals are rational.

Step 3

Exam Tip

पहला दशमलव अनंत और अनावर्ती है इसलिए अपरिमेय है। सांत या आवर्ती दशमलव परिमेय होते हैं।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा विकल्प (0.123456789101112...) के बारे में सही है?

Which option is correct about (0.123456789101112...)?

Explanation opens after your attempt
Correct Answer

A. यह अनंत और अनावर्ती हैIt is non terminating and non repeating

Step 1

Concept

This decimal has no fixed repetition. So it is considered non terminating and non repeating.

Step 2

Why this answer is correct

The correct answer is A. यह अनंत और अनावर्ती है / It is non terminating and non repeating. This decimal has no fixed repetition. So it is considered non terminating and non repeating.

Step 3

Exam Tip

इस दशमलव में निश्चित दोहराव नहीं है। इसलिए यह अनंत और अनावर्ती माना जाता है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

कौन सा विकल्प \(\frac{1}{6}\) के दशमलव विस्तार को सही बताता है?

Which option correctly describes the decimal expansion of \(\frac{1}{6}\)?

Explanation opens after your attempt
Correct Answer

A. अनंत और आवर्तीNon terminating and repeating

Step 1

Concept

\(\frac{1}{6}=0.1666...\), which is repeating. A rational number has a terminating or repeating decimal.

Step 2

Why this answer is correct

The correct answer is A. अनंत और आवर्ती / Non terminating and repeating. \(\frac{1}{6}=0.1666...\), which is repeating. A rational number has a terminating or repeating decimal.

Step 3

Exam Tip

\(\frac{1}{6}=0.1666...\) है जो आवर्ती है। परिमेय संख्या का दशमलव सांत या आवर्ती होता है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 27

\(\sqrt[3]{27}\) किस प्रकार की संख्या है?

What type of number is \(\sqrt[3]{27}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

\(\sqrt[3]{27}=3\). The cube root of a perfect cube is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. \(\sqrt[3]{27}=3\). The cube root of a perfect cube is rational.

Step 3

Exam Tip

\(\sqrt[3]{27}=3\) है। पूर्ण घन की घनमूल परिमेय होती है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

\(2.\overline{18}\) किस प्रकार की संख्या है?

What type of number is \(2.\overline{18}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

The bar shows that (18) repeats. A repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. The bar shows that (18) repeats. A repeating decimal is rational.

Step 3

Exam Tip

ऊपर की रेखा बताती है कि (18) दोहरता है। आवर्ती दशमलव परिमेय होता है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 26

(0.040040004...) किस प्रकार का दशमलव है?

What type of decimal is (0.040040004...)?

Explanation opens after your attempt
Correct Answer

A. अनंत और अनावर्तीNon terminating and non repeating

Step 1

Concept

It has no fixed repeating block. So it is non terminating and non repeating.

Step 2

Why this answer is correct

The correct answer is A. अनंत और अनावर्ती / Non terminating and non repeating. It has no fixed repeating block. So it is non terminating and non repeating.

Step 3

Exam Tip

इसमें दोहरने वाला निश्चित समूह नहीं है। इसलिए यह अनंत और अनावर्ती दशमलव है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

\(\frac{1}{7}\) का दशमलव प्रसार कैसा है?

What is the decimal expansion of \(\frac{1}{7}\) like?

Explanation opens after your attempt
Correct Answer

A. अनंत और आवर्तीNon terminating and repeating

Step 1

Concept

\(\frac{1}{7}\) is rational and its decimal is repeating. Rational numbers give terminating or repeating decimals.

Step 2

Why this answer is correct

The correct answer is A. अनंत और आवर्ती / Non terminating and repeating. \(\frac{1}{7}\) is rational and its decimal is repeating. Rational numbers give terminating or repeating decimals.

Step 3

Exam Tip

\(\frac{1}{7}\) परिमेय है और इसका दशमलव आवर्ती होता है। परिमेय संख्याएँ सांत या आवर्ती दशमलव देती हैं।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

\(0.\overline{7}\) किस प्रकार की संख्या है?

What type of number is \(0.\overline{7}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

\(0.\overline{7}\) is a repeating decimal. Every repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. \(0.\overline{7}\) is a repeating decimal. Every repeating decimal is rational.

Step 3

Exam Tip

\(0.\overline{7}\) आवर्ती दशमलव है। हर आवर्ती दशमलव परिमेय होता है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

कौन सा दशमलव परिमेय संख्या दिखाता है?

Which decimal represents a rational number?

Explanation opens after your attempt
Correct Answer

A. (2.454545...)

Step 1

Concept

The block (45) repeats so it is a repeating decimal. A repeating decimal is rational.

Step 2

Why this answer is correct

The correct answer is A. (2.454545...). The block (45) repeats so it is a repeating decimal. A repeating decimal is rational.

Step 3

Exam Tip

(45) बार-बार दोहर रहा है इसलिए यह आवर्ती दशमलव है। आवर्ती दशमलव परिमेय होता है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

\(\pi\) किस प्रकार की संख्या है?

What type of number is \(\pi\)?

Explanation opens after your attempt
Correct Answer

A. अपरिमेय संख्याIrrational number

Step 1

Concept

The decimal expansion of \(\pi\) is non terminating and non repeating. So it is irrational.

Step 2

Why this answer is correct

The correct answer is A. अपरिमेय संख्या / Irrational number. The decimal expansion of \(\pi\) is non terminating and non repeating. So it is irrational.

Step 3

Exam Tip

\(\pi\) का दशमलव अनंत और अनावर्ती है। इसलिए यह अपरिमेय संख्या है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

अपरिमेय संख्या का दशमलव प्रसार कैसा होता है?

What is the decimal expansion of an irrational number like?

Explanation opens after your attempt
Correct Answer

A. अनंत और अनावर्तीNon terminating and non repeating

Step 1

Concept

The decimal of an irrational number neither ends nor repeats. This is the easiest identification.

Step 2

Why this answer is correct

The correct answer is A. अनंत और अनावर्ती / Non terminating and non repeating. The decimal of an irrational number neither ends nor repeats. This is the easiest identification.

Step 3

Exam Tip

अपरिमेय संख्या का दशमलव न खत्म होता है और न दोहराता है। यही सबसे आसान पहचान है।

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Question Easy Mathematics Chapter 2: Polynomials Irrational numbers and real numbers Class 10 Level 25

दशमलव (0.333...) किस प्रकार की संख्या है?

What type of number is the decimal (0.333...)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

A repeating decimal is rational. It can be written as \(\frac{1}{3}\).

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. A repeating decimal is rational. It can be written as \(\frac{1}{3}\).

Step 3

Exam Tip

दोहराने वाला दशमलव परिमेय होता है। इसे \(\frac{1}{3}\) लिखा जा सकता है।

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

\(0.00999\ldots\) किसके बराबर है?

What is \(0.00999\ldots\) equal to?

Explanation opens after your attempt
Correct Answer

B. (0.01)

Step 1

Concept

When (9)'s continue forever at the end, the number equals the next terminating decimal. Thus \(0.00999\ldots=0.01\).

Step 2

Why this answer is correct

The correct answer is B. (0.01). When (9)'s continue forever at the end, the number equals the next terminating decimal. Thus \(0.00999\ldots=0.01\).

Step 3

Exam Tip

अंत में अनंत (9) आने पर संख्या अगले सांत दशमलव के बराबर होती है। इसलिए \(0.00999\ldots=0.01\)।

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

\(0.\overline{063}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.\overline{063}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{7}{111}\)

Step 1

Concept

\(0.\overline{063}=\frac{63}{999}\), and reducing by (9) gives \(\frac{7}{111}\). An initial zero inside the repeating block is also counted as a digit.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{7}{111}\). \(0.\overline{063}=\frac{63}{999}\), and reducing by (9) gives \(\frac{7}{111}\). An initial zero inside the repeating block is also counted as a digit.

Step 3

Exam Tip

\(0.\overline{063}=\frac{63}{999}\) और (9) से सरल करने पर \(\frac{7}{111}\) मिलता है। आवर्ती भाग में आरंभिक शून्य को भी अंक माना जाता है।

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

दशमलव \(0.505000500005000005\ldots\) के लिए सही वर्गीकरण कौन-सा है?

What is the correct classification of the decimal \(0.505000500005000005\ldots\)?

Explanation opens after your attempt
Correct Answer

C. असांत अनावर्ती अपरिमेयNon-terminating non-recurring irrational

Step 1

Concept

This decimal does not end, and the number of zeros keeps changing. Since there is no fixed repeating block, it is non-terminating non-recurring.

Step 2

Why this answer is correct

The correct answer is C. असांत अनावर्ती अपरिमेय / Non-terminating non-recurring irrational. This decimal does not end, and the number of zeros keeps changing. Since there is no fixed repeating block, it is non-terminating non-recurring.

Step 3

Exam Tip

यह दशमलव समाप्त नहीं होता और शून्यों की संख्या बदलती जाती है। स्थिर आवर्ती खंड न होने से यह असांत अनावर्ती है।

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

\(0.46999\ldots\) किसके बराबर है?

What is \(0.46999\ldots\) equal to?

Explanation opens after your attempt
Correct Answer

B. (0.47)

Step 1

Concept

When (9)'s continue forever at the end, the number equals the next terminating decimal. Thus \(0.46999\ldots=0.47\).

Step 2

Why this answer is correct

The correct answer is B. (0.47). When (9)'s continue forever at the end, the number equals the next terminating decimal. Thus \(0.46999\ldots=0.47\).

Step 3

Exam Tip

अंत में अनंत (9) आने पर संख्या अगले सांत दशमलव के बराबर होती है। इसलिए \(0.46999\ldots=0.47\)।

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

\(0.00\overline{54}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.00\overline{54}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{3}{550}\)

Step 1

Concept

Two non-repeating zeros and two repeating digits give \(\frac{54}{9900}\). Reducing it gives \(\frac{3}{550}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{3}{550}\). Two non-repeating zeros and two repeating digits give \(\frac{54}{9900}\). Reducing it gives \(\frac{3}{550}\).

Step 3

Exam Tip

दो अनावर्ती शून्य और दो आवर्ती अंकों से \(\frac{54}{9900}\) बनता है। इसे सरल करने पर \(\frac{3}{550}\) मिलता है।

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

\(0.\overline{108}\) को सरलतम भिन्न में लिखने पर हर क्या होगा?

What is the denominator when \(0.\overline{108}\) is written in lowest fraction form?

Explanation opens after your attempt
Correct Answer

B. (37)

Step 1

Concept

\(0.\overline{108}=\frac{108}{999}=\frac{4}{37}\). First form the denominator with (9)'s according to the repeating digits and then reduce.

Step 2

Why this answer is correct

The correct answer is B. (37). \(0.\overline{108}=\frac{108}{999}=\frac{4}{37}\). First form the denominator with (9)'s according to the repeating digits and then reduce.

Step 3

Exam Tip

\(0.\overline{108}=\frac{108}{999}=\frac{4}{37}\) है। आवर्ती अंकों की संख्या के अनुसार पहले (9) वाला हर बनाएं फिर सरल करें।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(0.0\overline{125}\) को सरलतम भिन्न \(\frac{p}{q}\) में लिखने पर (q) क्या होगा?

When \(0.0\overline{125}\) is written as \(\frac{p}{q}\) in lowest form, what is (q)?

Explanation opens after your attempt
Correct Answer

B. (1998)

Step 1

Concept

One non-repeating zero and three repeating digits give \(\frac{125}{9990}\), which reduces to \(\frac{25}{1998}\). In mixed recurring decimals, do not treat the first denominator as the final one.

Step 2

Why this answer is correct

The correct answer is B. (1998). One non-repeating zero and three repeating digits give \(\frac{125}{9990}\), which reduces to \(\frac{25}{1998}\). In mixed recurring decimals, do not treat the first denominator as the final one.

Step 3

Exam Tip

एक अनावर्ती शून्य और तीन आवर्ती अंकों से \(\frac{125}{9990}\) बनता है, जो \(\frac{25}{1998}\) तक सरल होता है। मिश्रित आवर्ती दशमलव में पहले बना हर अंतिम हर नहीं मानें।

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Question Expert Mathematics Chapter 1: 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 Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(0.\overline{045}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.\overline{045}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{5}{111}\)

Step 1

Concept

\(0.\overline{045}=\frac{45}{999}\), and reducing by (9) gives \(\frac{5}{111}\). First form the denominator with (9)'s according to the repeating digits.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{5}{111}\). \(0.\overline{045}=\frac{45}{999}\), and reducing by (9) gives \(\frac{5}{111}\). First form the denominator with (9)'s according to the repeating digits.

Step 3

Exam Tip

\(0.\overline{045}=\frac{45}{999}\) और (9) से सरल करने पर \(\frac{5}{111}\) मिलता है। आवर्ती अंकों की संख्या के अनुसार पहले (9) वाला हर बनाएं।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(0.\overline{045}\) को सरलतम भिन्न में लिखने पर हर क्या होगा?

What is the denominator when \(0.\overline{045}\) is written in lowest fraction form?

Explanation opens after your attempt
Correct Answer

A. (37)

Step 1

Concept

\(0.\overline{045}=\frac{45}{999}=\frac{5}{111}\), so the denominator is (111). An initial zero inside the repeating block is also counted as a digit.

Step 2

Why this answer is correct

The correct answer is A. (37). \(0.\overline{045}=\frac{45}{999}=\frac{5}{111}\), so the denominator is (111). An initial zero inside the repeating block is also counted as a digit.

Step 3

Exam Tip

\(0.\overline{045}=\frac{45}{999}=\frac{5}{111}\) है इसलिए हर (111) है। आवर्ती भाग में आरंभिक शून्य को भी अंक माना जाता है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

दशमलव \(0.303000300003000003\ldots\) के लिए सही वर्गीकरण कौन-सा है?

What is the correct classification of the decimal \(0.303000300003000003\ldots\)?

Explanation opens after your attempt
Correct Answer

C. असांत अनावर्ती अपरिमेयNon-terminating non-recurring irrational

Step 1

Concept

This decimal does not end, and the number of zeros keeps changing. Since there is no fixed repeating block, it is non-terminating non-recurring.

Step 2

Why this answer is correct

The correct answer is C. असांत अनावर्ती अपरिमेय / Non-terminating non-recurring irrational. This decimal does not end, and the number of zeros keeps changing. Since there is no fixed repeating block, it is non-terminating non-recurring.

Step 3

Exam Tip

यह दशमलव समाप्त नहीं होता और शून्यों की संख्या बदलती जाती है। स्थिर आवर्ती खंड न होने से यह असांत अनावर्ती है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(0.37999\ldots\) किसके बराबर है?

What is \(0.37999\ldots\) equal to?

Explanation opens after your attempt
Correct Answer

B. (0.38)

Step 1

Concept

When (9)'s continue forever at the end, the number equals the next terminating decimal. Thus \(0.37999\ldots=0.38\).

Step 2

Why this answer is correct

The correct answer is B. (0.38). When (9)'s continue forever at the end, the number equals the next terminating decimal. Thus \(0.37999\ldots=0.38\).

Step 3

Exam Tip

अंत में अनंत (9) आने पर संख्या अगले सांत दशमलव के बराबर होती है। इसलिए \(0.37999\ldots=0.38\)।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(0.00\overline{63}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.00\overline{63}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{7}{1100}\)

Step 1

Concept

Two non-repeating zeros and two repeating digits give \(\frac{63}{9900}\). Reducing it gives \(\frac{7}{1100}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{7}{1100}\). Two non-repeating zeros and two repeating digits give \(\frac{63}{9900}\). Reducing it gives \(\frac{7}{1100}\).

Step 3

Exam Tip

दो अनावर्ती शून्य और दो आवर्ती अंकों से \(\frac{63}{9900}\) बनता है। इसे सरल करने पर \(\frac{7}{1100}\) मिलता है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

कौन-सा दशमलव परिमेय है लेकिन सांत दशमलव के बराबर नहीं है?

Which decimal is rational but not equal to a terminating decimal?

Explanation opens after your attempt
Correct Answer

B. \(0.04\overline{6}\)

Step 1

Concept

\(0.04\overline{6}\) has a fixed repeating digit, so it is rational but not terminating. A decimal is terminating only when zeros continue after some point.

Step 2

Why this answer is correct

The correct answer is B. \(0.04\overline{6}\). \(0.04\overline{6}\) has a fixed repeating digit, so it is rational but not terminating. A decimal is terminating only when zeros continue after some point.

Step 3

Exam Tip

\(0.04\overline{6}\) में स्थिर आवर्ती अंक है इसलिए यह परिमेय है पर सांत नहीं है। अंत में केवल शून्य आने पर ही सांत दशमलव माना जाता है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 20

\(0.2\overline{54}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.2\overline{54}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{14}{55}\)

Step 1

Concept

The non-repeating part (2) and repeating part (54) give \(\frac{252}{990}\), which reduces to \(\frac{14}{55}\). In exams, identify repeating and non-repeating digits separately.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{14}{55}\). The non-repeating part (2) and repeating part (54) give \(\frac{252}{990}\), which reduces to \(\frac{14}{55}\). In exams, identify repeating and non-repeating digits separately.

Step 3

Exam Tip

सांत भाग (2) और आवर्ती भाग (54) से भिन्न \(\frac{252}{990}\) बनती है जो \(\frac{14}{55}\) तक सरल होती है। परीक्षा में आवर्ती और अनावर्ती अंकों को अलग पहचानें।

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Question Expert Mathematics Chapter 1: 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 Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

किस दशमलव को देखकर निश्चित रूप से परिमेय संख्या कहा जा सकता है?

Which decimal can definitely be called a rational number?

Explanation opens after your attempt
Correct Answer

C. \(0.58\overline{23}\)

Step 1

Concept

In \(0.58\overline{23}\), the block (23) repeats regularly, so it is rational. A fixed repeating block is a strong sign of rationality.

Step 2

Why this answer is correct

The correct answer is C. \(0.58\overline{23}\). In \(0.58\overline{23}\), the block (23) repeats regularly, so it is rational. A fixed repeating block is a strong sign of rationality.

Step 3

Exam Tip

\(0.58\overline{23}\) में (23) स्थिर रूप से दोहरता है, इसलिए यह परिमेय है। स्थिर आवर्ती खंड परिमेयता का मजबूत संकेत है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(0.\overline{027}\) को सरलतम भिन्न में लिखने पर हर क्या होगा?

What is the denominator when \(0.\overline{027}\) is written in lowest fraction form?

Explanation opens after your attempt
Correct Answer

A. (37)

Step 1

Concept

\(0.\overline{027}=\frac{27}{999}=\frac{1}{37}\). An initial zero inside the repeating block is counted as a digit.

Step 2

Why this answer is correct

The correct answer is A. (37). \(0.\overline{027}=\frac{27}{999}=\frac{1}{37}\). An initial zero inside the repeating block is counted as a digit.

Step 3

Exam Tip

\(0.\overline{027}=\frac{27}{999}=\frac{1}{37}\)। आवर्ती भाग में आरंभिक शून्य भी अंकों की संख्या में गिना जाता है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

दशमलव \(0.202002000200002\ldots\) के लिए सही वर्गीकरण कौन-सा है?

What is the correct classification of the decimal \(0.202002000200002\ldots\)?

Explanation opens after your attempt
Correct Answer

C. असांत अनावर्ती अपरिमेयNon-terminating non-recurring irrational

Step 1

Concept

This decimal does not end, and the number of zeros between the (2)'s keeps changing. Since there is no fixed repeating block, it is non-terminating non-recurring.

Step 2

Why this answer is correct

The correct answer is C. असांत अनावर्ती अपरिमेय / Non-terminating non-recurring irrational. This decimal does not end, and the number of zeros between the (2)'s keeps changing. Since there is no fixed repeating block, it is non-terminating non-recurring.

Step 3

Exam Tip

यह दशमलव समाप्त नहीं होता और (2) के बीच शून्यों की संख्या बदलती रहती है। स्थिर आवर्ती खंड न होने से यह असांत अनावर्ती है।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(0.124999\ldots\) किसके बराबर है?

What is \(0.124999\ldots\) equal to?

Explanation opens after your attempt
Correct Answer

B. (0.125)

Step 1

Concept

When (9)'s continue forever at the end, the number equals the next terminating decimal. Thus \(0.124999\ldots=0.125\).

Step 2

Why this answer is correct

The correct answer is B. (0.125). When (9)'s continue forever at the end, the number equals the next terminating decimal. Thus \(0.124999\ldots=0.125\).

Step 3

Exam Tip

अंत में अनंत (9) होने पर संख्या अगले सांत दशमलव के बराबर होती है। इसलिए \(0.124999\ldots=0.125\)।

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Question Expert Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 19

\(0.00\overline{72}\) का सरलतम भिन्न रूप कौन-सा है?

Which is the lowest fraction form of \(0.00\overline{72}\)?

Explanation opens after your attempt
Correct Answer

A. \(\frac{2}{275}\)

Step 1

Concept

Two non-repeating zeros and two repeating digits give \(\frac{72}{9900}\). Reducing it gives \(\frac{2}{275}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{2}{275}\). Two non-repeating zeros and two repeating digits give \(\frac{72}{9900}\). Reducing it gives \(\frac{2}{275}\).

Step 3

Exam Tip

दो अनावर्ती शून्य और दो आवर्ती अंकों से \(\frac{72}{9900}\) बनता है। इसे सरल करने पर \(\frac{2}{275}\) मिलता है।

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Question Hard Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(0.02\overline{7}\) को सरलतम भिन्न \(\frac{p}{q}\) में लिखने पर (q) क्या होगा?

When \(0.02\overline{7}\) is written as \(\frac{p}{q}\) in lowest form, what is (q)?

Explanation opens after your attempt
Correct Answer

A. (36)

Step 1

Concept

Let \(x=0.027777\ldots\).

Step 2

Why this answer is correct

\(100x=2.7777\ldots\) and \(1000x=27.7777\ldots\), so (900x=25) and \(x=\frac{25}{900}=\frac{1}{36}\).

Step 3

Exam Tip

For a mixed recurring decimal, separate the non-repeating and repeating parts before multiplying. चरण 1: मान लें \(x=0.027777\ldots\)। चरण 2: \(100x=2.7777\ldots\) और \(1000x=27.7777\ldots\), इसलिए (900x=25) और \(x=\frac{25}{900}=\frac{1}{36}\)। चरण 3: मिश्रित आवर्ती दशमलव में अनावर्ती और आवर्ती भाग को अलग करके गुणा करें।

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Question Hard Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

यदि \(0.00\overline{45}\) को सरलतम भिन्न \(\frac{p}{q}\) में लिखा जाए, तो सही (q) कौन-सा है?

If \(0.00\overline{45}\) is written as \(\frac{p}{q}\) in lowest form, which is the correct (q)?

Explanation opens after your attempt
Correct Answer

A. (220)

Step 1

Concept

\(0.00\overline{45}\) has two non-repeating zeros and two repeating digits.

Step 2

Why this answer is correct

Its fraction form is \(\frac{45}{9900}\), which reduces to \(\frac{1}{220}\).

Step 3

Exam Tip

The first denominator formed from a recurring decimal may not be the final denominator. चरण 1: \(0.00\overline{45}\) में दो अनावर्ती शून्य और दो आवर्ती अंक हैं। चरण 2: भिन्न रूप \(\frac{45}{9900}\) है, जिसे (45) से सरल करने पर \(\frac{1}{220}\) मिलता है। चरण 3: आवर्ती दशमलव में बनने वाला पहला हर अंतिम हर नहीं हो सकता।

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Question Hard Mathematics Chapter 1: Real Numbers 7: Decimal expansion of rational numbers Class 10 Level 21

\(0.24999\ldots\) किसके बराबर है?

What is \(0.24999\ldots\) equal to?

Explanation opens after your attempt
Correct Answer

B. (0.25)

Step 1

Concept

When (9)'s continue forever at the end, the number may equal the next terminating decimal.

Step 2

Why this answer is correct

\(0.24999\ldots=0.25\).

Step 3

Exam Tip

Convert infinite repeating (9)'s into the simpler terminating form. चरण 1: अंत में लगातार (9) आने पर संख्या अगले सांत दशमलव के बराबर हो सकती है। चरण 2: \(0.24999\ldots=0.25\) है। चरण 3: ऐसे दशमलवों में (9) की अनंत पुनरावृत्ति को साधारण सांत रूप में बदलें।

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