यदि \(a_1=2\) और (a_{n+1}=a_n+n(n+2)) है तो \(a_4\) क्या होगा?

If \(a_1=2\) and (a_{n+1}=a_n+n(n+2)), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (26)

Step 1

Concept

The terms are (2,5,13,28), so \(a_4=28\). Add the values (3,8,15) of (n(n+2)).

Step 2

Why this answer is correct

The correct answer is C. (26). The terms are (2,5,13,28), so \(a_4=28\). Add the values (3,8,15) of (n(n+2)).

Step 3

Exam Tip

पद (2,5,13,28) नहीं बल्कि \(a_4=28\) है। (n(n+2)) के मान (3,8,15) जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=2\) और (a_{n+1}=a_n+n(n+2)) है तो \(a_4\) क्या होगा? / If \(a_1=2\) and (a_{n+1}=a_n+n(n+2)), what is \(a_4\)?

Correct Answer: C. (26). Explanation: पद (2,5,13,28) नहीं बल्कि \(a_4=28\) है। (n(n+2)) के मान (3,8,15) जोड़ें। / The terms are (2,5,13,28), so \(a_4=28\). Add the values (3,8,15) of (n(n+2)).

Which concept should I revise for this Mathematics MCQ?

The terms are (2,5,13,28), so \(a_4=28\). Add the values (3,8,15) of (n(n+2)).

What exam hint can help solve this Mathematics question?

पद (2,5,13,28) नहीं बल्कि \(a_4=28\) है। (n(n+2)) के मान (3,8,15) जोड़ें।