Easy Mathematics Chapter 1: Real Numbers Class 10 Level 14

यदि \(x=\sqrt{5}\), तो (5x) कैसी संख्या होगी?

If \(x=\sqrt{5}\), what type of number is (5x)?

Explanation opens after your attempt
Correct Answer

B. अपरिमेयIrrational

Step 1

Concept

\(x=\sqrt{5}\) is irrational.

Step 2

Why this answer is correct

\(5x=5\sqrt{5}\), and (5) is a non-zero rational number.

Step 3

Exam Tip

Multiplying an irrational number by a non-zero rational number keeps it irrational. चरण 1: \(x=\sqrt{5}\) अपरिमेय है। चरण 2: \(5x=5\sqrt{5}\), और (5) अशून्य परिमेय है। चरण 3: अपरिमेय संख्या को अशून्य परिमेय से गुणा करने पर परिणाम अपरिमेय रहता है।

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The correct answer is B. अपरिमेय / Irrational.

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