Hard Mathematics Chapter 1: Real Numbers Class 10 Level 14

यदि (x) अपरिमेय है, तो (x+3) के परिमेय होने की संभावना के बारे में सही कथन क्या है?

If (x) is irrational, what is correct about the possibility of (x+3) being rational?

Explanation opens after your attempt
Correct Answer

B. यह कभी परिमेय नहीं हो सकताIt can never be rational

Step 1

Concept

(3) is rational.

Step 2

Why this answer is correct

If (x+3) were rational, then (x=(x+3)-3) would also be rational, contradicting the given fact.

Step 3

Exam Tip

The contradiction method is useful in such questions. चरण 1: (3) एक परिमेय संख्या है। चरण 2: यदि (x+3) परिमेय हो, तो (x=(x+3)-3) भी परिमेय होगा, जो दी गई बात के विरुद्ध है। चरण 3: ऐसे प्रश्नों में विरोध विधि तेज काम करती है।

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The correct answer is B. यह कभी परिमेय नहीं हो सकता / It can never be rational.

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