नियम \(a_n=n^2+3n\) से \(a_5\) क्या होगा?

What will \(a_5\) be for the rule \(a_n=n^2+3n\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (40)

Step 1

Concept

Putting (n=5), (a_5=52+3(5)=40). Handle both the square and multiplication carefully.

Step 2

Why this answer is correct

The correct answer is B. (40). Putting (n=5), (a_5=52+3(5)=40). Handle both the square and multiplication carefully.

Step 3

Exam Tip

(n=5) रखने पर (a_5=52+3(5)=40) है। वर्ग और गुणा दोनों सावधानी से करें।

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Mathematics Answer, Explanation and Revision Hints

नियम \(a_n=n^2+3n\) से \(a_5\) क्या होगा? / What will \(a_5\) be for the rule \(a_n=n^2+3n\)?

Correct Answer: B. (40). Explanation: (n=5) रखने पर (a_5=52+3(5)=40) है। वर्ग और गुणा दोनों सावधानी से करें। / Putting (n=5), (a_5=52+3(5)=40). Handle both the square and multiplication carefully.

Which concept should I revise for this Mathematics MCQ?

Putting (n=5), (a_5=52+3(5)=40). Handle both the square and multiplication carefully.

What exam hint can help solve this Mathematics question?

(n=5) रखने पर (a_5=52+3(5)=40) है। वर्ग और गुणा दोनों सावधानी से करें।