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Mathematics Real Numbers MCQ Questions for Class 9

Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.

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Same chapter ke nearby topics ko revise jarur karein. Exam preparation ke liye yeh topics important hain. jisme niche ke ye 8 Topics hain.

8 topics
01 Practice Topic Rational numbers 51 MCQs 02 Practice Topic Exponents 600 MCQs 03 Practice Topic Number line 600 MCQs 04 Practice Topic Decimal representation 600 MCQs 05 Practice Topic Irrational numbers 600 MCQs 06 Practice Topic Proof of irrationality of square root 2 and square root 3 649 MCQs 07 Practice Topic Square root spiral 650 MCQs 08 Practice Topic General chapter practice 50 MCQs

Real Numbers Practice Questions

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Question 571/600 Expert Mathematics Number Systems Real Numbers Class 9 Level 3

\(\sqrt{432}\) का सरल रूप क्या है?

What is the simplified form of \(\sqrt{432}\)?

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Correct Answer

A. \(12\sqrt{3}\)

Explanation

Simple Explanation

\(432=144\times3\)। / \(432=144\times3\).

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Question 572/600 Expert Mathematics Number Systems Real Numbers Class 9 Level 3

यदि \(a=\sqrt{8}\) और \(b=\sqrt{18}\) तो (a+b) क्या है?

If \(a=\sqrt{8}\) and \(b=\sqrt{18}\), what is (a+b)?

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Correct Answer

B. \(5\sqrt{2}\)

Explanation

Simple Explanation

\(2\sqrt{2}+3\sqrt{2}=5\sqrt{2}\)। / \(2\sqrt{2}+3\sqrt{2}=5\sqrt{2}\).

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Question 573/600 Expert Mathematics Number Systems Real Numbers Class 9 Level 3

किस संख्या का दशमलव समाप्य नहीं है?

Which number does not have a terminating decimal?

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Correct Answer

C. \(\frac{13}{15}\)

Explanation

Simple Explanation

हर में 3 का गुणनखंड है। / The denominator contains factor 3.

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Question 575/600 Expert Mathematics Number Systems Real Numbers Class 9 Level 3

\(\sqrt{500}-\sqrt{125}\) का मान क्या है?

What is the value of \(\sqrt{500}-\sqrt{125}\)?

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Correct Answer

A. \(5\sqrt{5}\)

Explanation

Simple Explanation

\(10\sqrt{5}-5\sqrt{5}=5\sqrt{5}\)। / \(10\sqrt{5}-5\sqrt{5}=5\sqrt{5}\).

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Question 577/600 Expert Mathematics Number Systems Real Numbers Class 9 Level 3

\(\sqrt{675}\) का सरल रूप क्या है?

What is the simplified form of \(\sqrt{675}\)?

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Correct Answer

A. \(15\sqrt{3}\)

Explanation

Simple Explanation

\(675=225\times3\)। / \(675=225\times3\).

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Question 578/600 Expert Mathematics Number Systems Real Numbers Class 9 Level 3

यदि \(a=\sqrt{27}\) और \(b=\sqrt{12}\) तो (a-b) क्या है?

If \(a=\sqrt{27}\) and \(b=\sqrt{12}\), what is (a-b)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{3}\)

Explanation

Simple Explanation

\(3\sqrt{3}-2\sqrt{3}=\sqrt{3}\)। / \(3\sqrt{3}-2\sqrt{3}=\sqrt{3}\).

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Question 579/600 Expert Mathematics Number Systems Real Numbers Class 9 Level 3

कौन-सा समुच्चय सभी वास्तविक संख्याओं को दर्शाता है?

Which set represents all real numbers?

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Correct Answer

A. परिमेय और अपरिमेय का संघ

Explanation

Simple Explanation

वास्तविक = परिमेय ∪ अपरिमेय। / Real = Rational ∪ Irrational.

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Question 580/600 Expert Mathematics Number Systems Real Numbers Class 9 Level 3

\(\sqrt{882}\) का सरल रूप क्या है?

What is the simplified form of \(\sqrt{882}\)?

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Correct Answer

C. \(21\sqrt{2}\)

Explanation

Simple Explanation

\(882=441\times2\)। / \(882=441\times2\).

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