यदि \(a_1=3\) और \(a_{n+1}=2a_n+2n+1\) है तो \(a_3\) क्या होगा?

If \(a_1=3\) and \(a_{n+1}=2a_n+2n+1\), what is \(a_3\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (23)

Step 1

Concept

\(a_2=2\times3+3=9\) and \(a_3=2\times9+5=23\). Exam tip: the value of (2n+1) changes each time.

Step 2

Why this answer is correct

The correct answer is C. (23). \(a_2=2\times3+3=9\) and \(a_3=2\times9+5=23\). Exam tip: the value of (2n+1) changes each time.

Step 3

Exam Tip

\(a_2=2\times3+3=9\) और \(a_3=2\times9+5=23\) है। (2n+1) का मान हर बार बदलता है।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=3\) और \(a_{n+1}=2a_n+2n+1\) है तो \(a_3\) क्या होगा? / If \(a_1=3\) and \(a_{n+1}=2a_n+2n+1\), what is \(a_3\)?

Correct Answer: C. (23). Explanation: \(a_2=2\times3+3=9\) और \(a_3=2\times9+5=23\) है। (2n+1) का मान हर बार बदलता है। / \(a_2=2\times3+3=9\) and \(a_3=2\times9+5=23\). Exam tip: the value of (2n+1) changes each time.

Which concept should I revise for this Mathematics MCQ?

\(a_2=2\times3+3=9\) and \(a_3=2\times9+5=23\). Exam tip: the value of (2n+1) changes each time.

What exam hint can help solve this Mathematics question?

\(a_2=2\times3+3=9\) और \(a_3=2\times9+5=23\) है। (2n+1) का मान हर बार बदलता है।