Class 9 Mathematics - Number Systems - Square root spiral Easy Quiz

Mathematics Number Systems Square root spiral Easy Class 9 Level 17

Level 17 • 2/50 questions • 40 seconds per question.

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Question 1/2 Easy Mathematics Number Systems Irrational numbers Class 9 Level 17

इनमें से कौन-सा वर्गमूल अपरिमेय है?

Which of these square roots is irrational?

Explanation opens after your attempt
Correct Answer

C. \(\sqrt{10}\)

Step 1

Concept

(10) is not a perfect square so \(\sqrt{10}\) is irrational. Remembering perfect squares is useful.

Step 2

Why this answer is correct

The correct answer is C. \(\sqrt{10}\). (10) is not a perfect square so \(\sqrt{10}\) is irrational. Remembering perfect squares is useful.

Step 3

Exam Tip

(10) पूर्ण वर्ग नहीं है इसलिए \(\sqrt{10}\) अपरिमेय है। पूर्ण वर्गों की सूची याद रखना उपयोगी है।

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Question 2/2 Easy Mathematics Number Systems Irrational numbers Class 9 Level 17

इनमें से कौन-सा वर्गमूल परिमेय है?

Which of these square roots is rational?

Explanation opens after your attempt
Correct Answer

B. \(\sqrt{49}\)

Step 1

Concept

\(\sqrt{49}=7\) so it is rational. The square root of a perfect square is a rational integer.

Step 2

Why this answer is correct

The correct answer is B. \(\sqrt{49}\). \(\sqrt{49}=7\) so it is rational. The square root of a perfect square is a rational integer.

Step 3

Exam Tip

\(\sqrt{49}=7\) इसलिए यह परिमेय है। पूर्ण वर्ग का वर्गमूल हमेशा परिमेय पूर्णांक होता है।

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