Medium Mathematics Chapter 1: Real Numbers Class 10 Level 13

किस विकल्प में दी गई संख्या अपरिमेय है और (5) से छोटी है?

In which option is the given number irrational and less than (5)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{30}\)

Step 1

Concept

\(\sqrt{30}\) is irrational because (30) is not a perfect square.

Step 2

Why this answer is correct

But (25<30<36), so \(\sqrt{30}\) is greater than (5); the other options are rational.

Step 3

Exam Tip

This means the option set has no valid answer, so such a question should not be used. चरण 1: \(\sqrt{30}\) अपरिमेय है क्योंकि (30) पूर्ण वर्ग नहीं है। चरण 2: लेकिन (25<30<36), इसलिए \(\sqrt{30}\) (5) से बड़ा है, अतः यह सही नहीं? ध्यान से देखें: शर्त (5) से छोटी है, इसलिए कोई भी विकल्प? \(\frac{22}{7}\) और (4.75) परिमेय हैं, \(\sqrt{25}\) परिमेय है। चरण 3: इस प्रश्न में सही चयन नहीं बनता, इसलिए ऐसा विकल्प प्रश्न में नहीं होना चाहिए।

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What is the correct answer to this Mathematics MCQ?

The correct answer is A. \(\sqrt{30}\).

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