यदि \(a_1=2\) और \(a_{n+1}=3a_n+n^2\) है तो \(a_3\) क्या होगा?
If \(a_1=2\) and \(a_{n+1}=3a_n+n^2\), what is \(a_3\)?
Explanation opens after your attempt
C. (25)
Concept
\(a_2=3\times2+1=7\) and \(a_3=3\times7+4=25\). Exam tip: do both multiplication and square addition.
Why this answer is correct
The correct answer is C. (25). \(a_2=3\times2+1=7\) and \(a_3=3\times7+4=25\). Exam tip: do both multiplication and square addition.
Exam Tip
\(a_2=3\times2+1=7\) और \(a_3=3\times7+4=25\) है। गुणा और वर्ग जोड़ दोनों करें।
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