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

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

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (18)

Step 1

Concept

The terms are (1,3,8,18), so \(a_4=18\). Exam tip: the value of \(n^2+1\) changes at each step.

Step 2

Why this answer is correct

The correct answer is C. (18). The terms are (1,3,8,18), so \(a_4=18\). Exam tip: the value of \(n^2+1\) changes at each step.

Step 3

Exam Tip

पद (1,3,8,18) हैं इसलिए \(a_4=18\) है। \(n^2+1\) का मान हर चरण में बदलता है।

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Mathematics Answer, Explanation and Revision Hints

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

Correct Answer: C. (18). Explanation: पद (1,3,8,18) हैं इसलिए \(a_4=18\) है। \(n^2+1\) का मान हर चरण में बदलता है। / The terms are (1,3,8,18), so \(a_4=18\). Exam tip: the value of \(n^2+1\) changes at each step.

Which concept should I revise for this Mathematics MCQ?

The terms are (1,3,8,18), so \(a_4=18\). Exam tip: the value of \(n^2+1\) changes at each step.

What exam hint can help solve this Mathematics question?

पद (1,3,8,18) हैं इसलिए \(a_4=18\) है। \(n^2+1\) का मान हर चरण में बदलता है।