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Mathematics Real Numbers MCQ Questions for Class 9

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Real Numbers Practice Questions

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वास्तविक संख्याएँ किससे मिलकर बनती हैं?

Real numbers are made up of which numbers?

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Correct Answer

C. परिमेय और अपरिमेय संख्याएँRational and irrational numbers

Step 1

Concept

Real numbers include both rational and irrational numbers. In exams remember the whole number system on the real number line.

Step 2

Why this answer is correct

The correct answer is C. परिमेय और अपरिमेय संख्याएँ / Rational and irrational numbers. Real numbers include both rational and irrational numbers. In exams remember the whole number system on the real number line.

Step 3

Exam Tip

वास्तविक संख्याओं में परिमेय और अपरिमेय दोनों संख्याएँ आती हैं। परीक्षा में वास्तविक संख्या रेखा की पूरी संख्या प्रणाली याद रखें।

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इनमें से कौन सी संख्या वास्तविक संख्या है?

Which of the following is a real number?

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Correct Answer

A. \( \sqrt{5} \)

Step 1

Concept

\( \sqrt{5} \) is irrational and every irrational number is real. It can be shown on the real number line.

Step 2

Why this answer is correct

The correct answer is A. \( \sqrt{5} \). \( \sqrt{5} \) is irrational and every irrational number is real. It can be shown on the real number line.

Step 3

Exam Tip

\( \sqrt{5} \) अपरिमेय है और हर अपरिमेय संख्या वास्तविक होती है। वास्तविक संख्या रेखा पर इसे दिखाया जा सकता है।

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कौन सा कथन सही है?

Which statement is correct?

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Correct Answer

B. हर प्राकृतिक संख्या वास्तविक संख्या होती हैEvery natural number is a real number

Step 1

Concept

Natural numbers are a part of real numbers. Smaller sets can be included in a larger number system.

Step 2

Why this answer is correct

The correct answer is B. हर प्राकृतिक संख्या वास्तविक संख्या होती है / Every natural number is a real number. Natural numbers are a part of real numbers. Smaller sets can be included in a larger number system.

Step 3

Exam Tip

प्राकृतिक संख्याएँ वास्तविक संख्याओं का भाग हैं। बड़ी संख्या प्रणाली में छोटे समूह शामिल हो सकते हैं।

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\( \sqrt{16} \) किस प्रकार की वास्तविक संख्या है?

What type of real number is \( \sqrt{16} \)?

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Correct Answer

B. परिमेय संख्याRational number

Step 1

Concept

\( \sqrt{16}=4 \), and (4) is rational. The square root of a perfect square is rational.

Step 2

Why this answer is correct

The correct answer is B. परिमेय संख्या / Rational number. \( \sqrt{16}=4 \), and (4) is rational. The square root of a perfect square is rational.

Step 3

Exam Tip

\( \sqrt{16}=4 \) है और (4) परिमेय संख्या है। पूर्ण वर्ग का वर्गमूल परिमेय होता है।

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\( \sqrt{7} \) के बारे में सही विकल्प चुनिए।

Choose the correct option about \( \sqrt{7} \).

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Correct Answer

D. यह अपरिमेय वास्तविक संख्या हैIt is an irrational real number

Step 1

Concept

(7) is not a perfect square, so \( \sqrt{7} \) is irrational. Still, it is a real number.

Step 2

Why this answer is correct

The correct answer is D. यह अपरिमेय वास्तविक संख्या है / It is an irrational real number. (7) is not a perfect square, so \( \sqrt{7} \) is irrational. Still, it is a real number.

Step 3

Exam Tip

(7) पूर्ण वर्ग नहीं है इसलिए \( \sqrt{7} \) अपरिमेय है। फिर भी यह वास्तविक संख्या है।

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कौन सी संख्या परिमेय वास्तविक संख्या है?

Which number is a rational real number?

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Correct Answer

A. \( \frac{-3}{8} \)

Step 1

Concept

\( \frac{-3}{8} \) is a ratio of two integers with non-zero denominator. So it is both rational and real.

Step 2

Why this answer is correct

The correct answer is A. \( \frac{-3}{8} \). \( \frac{-3}{8} \) is a ratio of two integers with non-zero denominator. So it is both rational and real.

Step 3

Exam Tip

\( \frac{-3}{8} \) दो पूर्णांकों का अनुपात है और हर शून्य नहीं है। इसलिए यह परिमेय और वास्तविक दोनों है।

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(0.625) किस प्रकार की वास्तविक संख्या है?

What type of real number is (0.625)?

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Correct Answer

B. परिमेय संख्याRational number

Step 1

Concept

(0.625) is a terminating decimal, so it can be converted into a fraction. Terminating decimals are rational.

Step 2

Why this answer is correct

The correct answer is B. परिमेय संख्या / Rational number. (0.625) is a terminating decimal, so it can be converted into a fraction. Terminating decimals are rational.

Step 3

Exam Tip

(0.625) समाप्त दशमलव है इसलिए इसे भिन्न में बदला जा सकता है। समाप्त दशमलव परिमेय होते हैं।

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\(0.\overline{6}\) किस प्रकार की संख्या है?

What type of number is \(0.\overline{6}\)?

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Correct Answer

C. परिमेय वास्तविक संख्याRational real number

Step 1

Concept

\(0.\overline{6}\) is a repeating decimal, so it is rational. Every rational number is also real.

Step 2

Why this answer is correct

The correct answer is C. परिमेय वास्तविक संख्या / Rational real number. \(0.\overline{6}\) is a repeating decimal, so it is rational. Every rational number is also real.

Step 3

Exam Tip

\(0.\overline{6}\) आवर्ती दशमलव है इसलिए यह परिमेय है। हर परिमेय संख्या वास्तविक भी होती है।

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असमाप्त और अनावर्ती दशमलव किस प्रकार की संख्या होती है?

A non-terminating and non-repeating decimal is what type of number?

Explanation opens after your attempt
Correct Answer

B. अपरिमेय वास्तविक संख्याIrrational real number

Step 1

Concept

A non-terminating and non-repeating decimal is irrational. Still, it lies on the real number line.

Step 2

Why this answer is correct

The correct answer is B. अपरिमेय वास्तविक संख्या / Irrational real number. A non-terminating and non-repeating decimal is irrational. Still, it lies on the real number line.

Step 3

Exam Tip

असमाप्त और अनावर्ती दशमलव अपरिमेय होता है। फिर भी यह वास्तविक संख्या रेखा पर स्थित होता है।

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\( \frac{5}{0} \) वास्तविक संख्या क्यों नहीं है?

Why is \( \frac{5}{0} \) not a real number?

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Correct Answer

B. क्योंकि हर शून्य हैBecause the denominator is zero

Step 1

Concept

Division by zero is undefined. To be a real number, the number must be defined.

Step 2

Why this answer is correct

The correct answer is B. क्योंकि हर शून्य है / Because the denominator is zero. Division by zero is undefined. To be a real number, the number must be defined.

Step 3

Exam Tip

शून्य से भाग परिभाषित नहीं होता। वास्तविक संख्या बनने के लिए संख्या परिभाषित होनी चाहिए।

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Real Numbers FAQs

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