यदि \(a=\sqrt{5}\) और \(b=\sqrt{20}\) तो (a+b) क्या है?

If \(a=\sqrt{5}\) and \(b=\sqrt{20}\), what is (a+b)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

C. \(5\sqrt{5}\)

Step 1

Concept

\(\sqrt{20}=2\sqrt{5}\). Then add like surds.

Step 2

Why this answer is correct

The correct answer is C. \(5\sqrt{5}\). \(\sqrt{20}=2\sqrt{5}\). Then add like surds.

Step 3

Exam Tip

\(\sqrt{20}=2\sqrt{5}\)। योग \(3\sqrt{5}\) होगा।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a=\sqrt{5}\) और \(b=\sqrt{20}\) तो (a+b) क्या है? / If \(a=\sqrt{5}\) and \(b=\sqrt{20}\), what is (a+b)?

Correct Answer: C. \(5\sqrt{5}\). Explanation: \(\sqrt{20}=2\sqrt{5}\)। योग \(3\sqrt{5}\) होगा। / \(\sqrt{20}=2\sqrt{5}\). Then add like surds.

Which concept should I revise for this Mathematics MCQ?

\(\sqrt{20}=2\sqrt{5}\). Then add like surds.

What exam hint can help solve this Mathematics question?

\(\sqrt{20}=2\sqrt{5}\)। योग \(3\sqrt{5}\) होगा।