यदि \(a_1=2\), \(a_2=3\) और \(a_n=a_{n-1}+a_{n-2}+2n\) है तो \(a_4\) क्या होगा?
If \(a_1=2\), \(a_2=3\), and \(a_n=a_{n-1}+a_{n-2}+2n\), what is \(a_4\)?
Explanation opens after your attempt
A. (19)
Concept
\(a_3=3+2+6=11\) and \(a_4=11+3+8=22\). The correct option should include (22).
Why this answer is correct
The correct answer is A. (19). \(a_3=3+2+6=11\) and \(a_4=11+3+8=22\). The correct option should include (22).
Exam Tip
\(a_3=3+2+6=11\) और \(a_4=11+3+8=22\) नहीं बल्कि (22) है। सही विकल्प में (22) होना चाहिए।
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