यदि \(a_1=10\) और \(a_{n+1}=a_n+2a_1+n^2\) है तो \(a_3\) क्या होगा?

If \(a_1=10\) and \(a_{n+1}=a_n+2a_1+n^2\), what is \(a_3\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (54)

Step 1

Concept

\(a_2=10+20+1=31\) and \(a_3=31+20+4=55\). Exam tip: \(a_1\) stays fixed while \(n^2\) changes.

Step 2

Why this answer is correct

The correct answer is B. (54). \(a_2=10+20+1=31\) and \(a_3=31+20+4=55\). Exam tip: \(a_1\) stays fixed while \(n^2\) changes.

Step 3

Exam Tip

\(a_2=10+20+1=31\) और \(a_3=31+20+4=55\) है। सही विकल्पों में (55) होना चाहिए।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=10\) और \(a_{n+1}=a_n+2a_1+n^2\) है तो \(a_3\) क्या होगा? / If \(a_1=10\) and \(a_{n+1}=a_n+2a_1+n^2\), what is \(a_3\)?

Correct Answer: B. (54). Explanation: \(a_2=10+20+1=31\) और \(a_3=31+20+4=55\) है। सही विकल्पों में (55) होना चाहिए। / \(a_2=10+20+1=31\) and \(a_3=31+20+4=55\). Exam tip: \(a_1\) stays fixed while \(n^2\) changes.

Which concept should I revise for this Mathematics MCQ?

\(a_2=10+20+1=31\) and \(a_3=31+20+4=55\). Exam tip: \(a_1\) stays fixed while \(n^2\) changes.

What exam hint can help solve this Mathematics question?

\(a_2=10+20+1=31\) और \(a_3=31+20+4=55\) है। सही विकल्पों में (55) होना चाहिए।