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

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

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (24)

Step 1

Concept

The added values are (3,6,11), so \(a_4=2+3+6+11=22\). Exam tip: calculate both \(2^n\) and (n) before adding.

Step 2

Why this answer is correct

The correct answer is C. (24). The added values are (3,6,11), so \(a_4=2+3+6+11=22\). Exam tip: calculate both \(2^n\) and (n) before adding.

Step 3

Exam Tip

जुड़ने वाले मान (3,6,11) हैं इसलिए \(a_4=2+3+6+11=22\) नहीं बल्कि (22) है। सही विकल्प में (22) है।

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Mathematics Answer, Explanation and Revision Hints

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

Correct Answer: C. (24). Explanation: जुड़ने वाले मान (3,6,11) हैं इसलिए \(a_4=2+3+6+11=22\) नहीं बल्कि (22) है। सही विकल्प में (22) है। / The added values are (3,6,11), so \(a_4=2+3+6+11=22\). Exam tip: calculate both \(2^n\) and (n) before adding.

Which concept should I revise for this Mathematics MCQ?

The added values are (3,6,11), so \(a_4=2+3+6+11=22\). Exam tip: calculate both \(2^n\) and (n) before adding.

What exam hint can help solve this Mathematics question?

जुड़ने वाले मान (3,6,11) हैं इसलिए \(a_4=2+3+6+11=22\) नहीं बल्कि (22) है। सही विकल्प में (22) है।