यदि \(a_n=2n^2\) है, तो \(a_3\) का मान क्या है?

If \(a_n=2n^2\), what is the value of \(a_3\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (18)

Step 1

Concept

Putting (n=3), (a_3=2\(3^2\)=18). Square before multiplying.

Step 2

Why this answer is correct

The correct answer is B. (18). Putting (n=3), (a_3=2\(3^2\)=18). Square before multiplying.

Step 3

Exam Tip

(n=3) रखने पर (a_3=2\(3^2\)=18) है। वर्ग को गुणा से पहले निकालें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=2n^2\) है, तो \(a_3\) का मान क्या है? / If \(a_n=2n^2\), what is the value of \(a_3\)?

Correct Answer: B. (18). Explanation: (n=3) रखने पर (a_3=2\(3^2\)=18) है। वर्ग को गुणा से पहले निकालें। / Putting (n=3), (a_3=2\(3^2\)=18). Square before multiplying.

Which concept should I revise for this Mathematics MCQ?

Putting (n=3), (a_3=2\(3^2\)=18). Square before multiplying.

What exam hint can help solve this Mathematics question?

(n=3) रखने पर (a_3=2\(3^2\)=18) है। वर्ग को गुणा से पहले निकालें।