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 \(a_4\)?
Explanation opens after your attempt
C. (24)
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.
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.
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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