यदि \(a_1=2\) और \(a_{n+1}=n a_n+1\) है तो \(a_4\) क्या होगा?
If \(a_1=2\) and \(a_{n+1}=n a_n+1\), what is \(a_4\)?
Explanation opens after your attempt
B. (16)
Concept
\(a_2=1\times2+1=3\), \(a_3=2\times3+1=7\), and \(a_4=3\times7+1=22\). The correct option should include (22).
Why this answer is correct
The correct answer is B. (16). \(a_2=1\times2+1=3\), \(a_3=2\times3+1=7\), and \(a_4=3\times7+1=22\). The correct option should include (22).
Exam Tip
\(a_2=1\times2+1=3\), \(a_3=2\times3+1=7\) और \(a_4=3\times7+1=22\) है। सही विकल्प में (22) होना चाहिए।
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