Easy Mathematics Chapter 1: Real Numbers Class 10 Level 14

निम्नलिखित में से कौन-सी संख्या अपरिमेय है?

Which of the following numbers is irrational?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{15}\)

Step 1

Concept

An irrational number cannot be written exactly as a fraction.

Step 2

Why this answer is correct

(15) is not a perfect square, so \(\sqrt{15}\) is irrational.

Step 3

Exam Tip

For square-root options, first check whether the number inside is a perfect square. चरण 1: अपरिमेय संख्या को ठीक-ठीक भिन्न रूप में नहीं लिखा जा सकता। चरण 2: (15) पूर्ण वर्ग नहीं है, इसलिए \(\sqrt{15}\) अपरिमेय है। चरण 3: वर्गमूल वाले विकल्पों में अंदर की संख्या पूर्ण वर्ग है या नहीं, पहले यही देखें।

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What is the correct answer to this Mathematics MCQ?

The correct answer is A. \(\sqrt{15}\).

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