यदि \(a_1=9\) और \(a_{n+1}=a_n+a_1+n^2\) है तो \(a_3\) क्या होगा?
If \(a_1=9\) and \(a_{n+1}=a_n+a_1+n^2\), what is \(a_3\)?
Explanation opens after your attempt
B. (31)
Concept
\(a_2=9+9+1=19\) and \(a_3=19+9+4=32\). The correct option should include (32).
Why this answer is correct
The correct answer is B. (31). \(a_2=9+9+1=19\) and \(a_3=19+9+4=32\). The correct option should include (32).
Exam Tip
\(a_2=9+9+1=19\) और \(a_3=19+9+4=32\) है। सही विकल्प में (32) होना चाहिए।
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