Class 9 Mathematics - Number Systems - Irrational numbers Medium Quiz

Level 11 • 3/50 questions • 35 seconds per question.

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किस विकल्प में सभी संख्याएं असांत आवर्ती हैं?

In which option are all numbers non-terminating recurring?

Explanation opens after your attempt
Correct Answer

A. \(0.\overline{6}\), \(1.2323\ldots\), \(4.105105\ldots\)

Step 1

Concept

All numbers in the first option have some part repeating again and again. This is the key feature of non-terminating recurring decimals.

Step 2

Why this answer is correct

The correct answer is A. \(0.\overline{6}\), \(1.2323\ldots\), \(4.105105\ldots\). All numbers in the first option have some part repeating again and again. This is the key feature of non-terminating recurring decimals.

Step 3

Exam Tip

पहले विकल्प की सभी संख्याओं में कोई न कोई भाग बार-बार दोहरता है। यही असांत आवर्ती दशमलव की पहचान है।

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कौन-सा दशमलव असांत अनावर्ती हो सकता है?

Which decimal can be non-terminating non-recurring?

Explanation opens after your attempt
Correct Answer

C. \(2.7182818\ldots\) बिना निश्चित दोहराव\(2.7182818\ldots\) without fixed repetition

Step 1

Concept

A non-terminating decimal without fixed repetition is non-terminating non-recurring. Such decimals can represent irrational numbers.

Step 2

Why this answer is correct

The correct answer is C. \(2.7182818\ldots\) बिना निश्चित दोहराव / \(2.7182818\ldots\) without fixed repetition. A non-terminating decimal without fixed repetition is non-terminating non-recurring. Such decimals can represent irrational numbers.

Step 3

Exam Tip

बिना निश्चित दोहराव वाला असांत दशमलव असांत अनावर्ती होता है। ऐसे दशमलव अपरिमेय संख्या का रूप हो सकते हैं।

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(0.125), \( \frac{1}{9} \), (0.12) में सबसे बड़ी संख्या कौन-सी है?

Among (0.125), \( \frac{1}{9} \), and (0.12), which is the greatest number?

Explanation opens after your attempt
Correct Answer

B. (0.125)

Step 1

Concept

\( \frac{1}{9}=0.111\ldots \), so (0.125) is the greatest. Convert fractions into decimals for comparison.

Step 2

Why this answer is correct

The correct answer is B. (0.125). \( \frac{1}{9}=0.111\ldots \), so (0.125) is the greatest. Convert fractions into decimals for comparison.

Step 3

Exam Tip

\( \frac{1}{9}=0.111\ldots \), इसलिए (0.125) सबसे बड़ा है। भिन्नों को दशमलव में बदलकर तुलना करें।

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FAQs

Class 9 Mathematics Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 3 questions are available for the selected class and difficulty.

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Can I open each question separately?

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