यदि \(a_n=5n^2-2\) है, तो \(a_3\) क्या होगा?

If \(a_n=5n^2-2\), what is \(a_3\)?

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

B. (43)

Step 1

Concept

(a_3=5(3)2-2=43). First square, then multiply and subtract.

Step 2

Why this answer is correct

The correct answer is B. (43). (a_3=5(3)2-2=43). First square, then multiply and subtract.

Step 3

Exam Tip

(a_3=5(3)2-2=43)। पहले वर्ग करें फिर गुणा और घटाव करें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=5n^2-2\) है, तो \(a_3\) क्या होगा? / If \(a_n=5n^2-2\), what is \(a_3\)?

Correct Answer: B. (43). Explanation: (a_3=5(3)2-2=43)। पहले वर्ग करें फिर गुणा और घटाव करें। / (a_3=5(3)2-2=43). First square, then multiply and subtract.

Which concept should I revise for this Mathematics MCQ?

(a_3=5(3)2-2=43). First square, then multiply and subtract.

What exam hint can help solve this Mathematics question?

(a_3=5(3)2-2=43)। पहले वर्ग करें फिर गुणा और घटाव करें।