नियम \(a_n=n^2+2n\) से \(a_4\) क्या होगा?

What will \(a_4\) be for the rule \(a_n=n^2+2n\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (24)

Step 1

Concept

Putting (n=4), (a_4=42+2(4)=24). Handle the power and multiplication carefully.

Step 2

Why this answer is correct

The correct answer is C. (24). Putting (n=4), (a_4=42+2(4)=24). Handle the power and multiplication carefully.

Step 3

Exam Tip

(n=4) रखने पर (a_4=42+2(4)=24) है। घात और गुणा दोनों ध्यान से करें।

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Mathematics Answer, Explanation and Revision Hints

नियम \(a_n=n^2+2n\) से \(a_4\) क्या होगा? / What will \(a_4\) be for the rule \(a_n=n^2+2n\)?

Correct Answer: C. (24). Explanation: (n=4) रखने पर (a_4=42+2(4)=24) है। घात और गुणा दोनों ध्यान से करें। / Putting (n=4), (a_4=42+2(4)=24). Handle the power and multiplication carefully.

Which concept should I revise for this Mathematics MCQ?

Putting (n=4), (a_4=42+2(4)=24). Handle the power and multiplication carefully.

What exam hint can help solve this Mathematics question?

(n=4) रखने पर (a_4=42+2(4)=24) है। घात और गुणा दोनों ध्यान से करें।