यदि \(a_1=3\) और \(a_{n+1}=a_n+2^n-n\) है तो \(a_5\) क्या होगा?

If \(a_1=3\) and \(a_{n+1}=a_n+2^n-n\), what is \(a_5\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (22)

Step 1

Concept

The added values are (1,2,5,12), so \(a_5=23\). Exam tip: find the values of \(2^n-n\) first.

Step 2

Why this answer is correct

The correct answer is C. (22). The added values are (1,2,5,12), so \(a_5=23\). Exam tip: find the values of \(2^n-n\) first.

Step 3

Exam Tip

जुड़ने वाले मान (1,2,5,12) हैं इसलिए \(a_5=23\) नहीं बल्कि (23) है। \(2^n-n\) के मान पहले निकालें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=3\) और \(a_{n+1}=a_n+2^n-n\) है तो \(a_5\) क्या होगा? / If \(a_1=3\) and \(a_{n+1}=a_n+2^n-n\), what is \(a_5\)?

Correct Answer: C. (22). Explanation: जुड़ने वाले मान (1,2,5,12) हैं इसलिए \(a_5=23\) नहीं बल्कि (23) है। \(2^n-n\) के मान पहले निकालें। / The added values are (1,2,5,12), so \(a_5=23\). Exam tip: find the values of \(2^n-n\) first.

Which concept should I revise for this Mathematics MCQ?

The added values are (1,2,5,12), so \(a_5=23\). Exam tip: find the values of \(2^n-n\) first.

What exam hint can help solve this Mathematics question?

जुड़ने वाले मान (1,2,5,12) हैं इसलिए \(a_5=23\) नहीं बल्कि (23) है। \(2^n-n\) के मान पहले निकालें।