Expert Mathematics Chapter 1: Real Numbers Class 10 Level 13

कौन-सा विकल्प दो अपरिमेय संख्याओं के योग को परिमेय बनाता है?

Which option makes the sum of two irrational numbers rational?

Explanation opens after your attempt
Correct Answer

B. (\(4+\sqrt{7}\)+\(4-\sqrt{7}\))

Step 1

Concept

\(4+\sqrt{7}\) and \(4-\sqrt{7}\) are both irrational.

Step 2

Why this answer is correct

Their sum is (8), which is rational.

Step 3

Exam Tip

In such examples, equal irrational parts cancel with opposite signs. चरण 1: \(4+\sqrt{7}\) और \(4-\sqrt{7}\) दोनों अपरिमेय हैं। चरण 2: उनका योग (8) है, जो परिमेय है। चरण 3: ऐसे उदाहरणों में समान अपरिमेय पद विपरीत चिह्न के साथ कटते हैं।

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What is the correct answer to this Mathematics MCQ?

The correct answer is B. (\(4+\sqrt{7}\)+\(4-\sqrt{7}\)).

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