यदि \(a_1=8\) और (a_{n+1}=a_n+2(-1)^n+n) है तो \(a_3\) क्या होगा?

If \(a_1=8\) and (a_{n+1}=a_n+2(-1)^n+n), what is \(a_3\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (11)

Step 1

Concept

\(a_2=8-2+1=7\) and \(a_3=7+2+2=11\). Exam tip: the sign of ((-1)^n) changes at each step.

Step 2

Why this answer is correct

The correct answer is C. (11). \(a_2=8-2+1=7\) and \(a_3=7+2+2=11\). Exam tip: the sign of ((-1)^n) changes at each step.

Step 3

Exam Tip

\(a_2=8-2+1=7\) और \(a_3=7+2+2=11\) है। ((-1)^n) का चिह्न हर चरण में बदलता है।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=8\) और (a_{n+1}=a_n+2(-1)^n+n) है तो \(a_3\) क्या होगा? / If \(a_1=8\) and (a_{n+1}=a_n+2(-1)^n+n), what is \(a_3\)?

Correct Answer: C. (11). Explanation: \(a_2=8-2+1=7\) और \(a_3=7+2+2=11\) है। ((-1)^n) का चिह्न हर चरण में बदलता है। / \(a_2=8-2+1=7\) and \(a_3=7+2+2=11\). Exam tip: the sign of ((-1)^n) changes at each step.

Which concept should I revise for this Mathematics MCQ?

\(a_2=8-2+1=7\) and \(a_3=7+2+2=11\). Exam tip: the sign of ((-1)^n) changes at each step.

What exam hint can help solve this Mathematics question?

\(a_2=8-2+1=7\) और \(a_3=7+2+2=11\) है। ((-1)^n) का चिह्न हर चरण में बदलता है।