यदि \(a_n=3n^2+2\) है, तो \(a_4\) क्या होगा?
If \(a_n=3n^2+2\), what is \(a_4\)?
Explanation opens after your attempt
C. (50)
Concept
Putting (n=4), (3\(4^2\)+2=50). Square first and then multiply.
Why this answer is correct
The correct answer is C. (50). Putting (n=4), (3\(4^2\)+2=50). Square first and then multiply.
Exam Tip
(n=4) रखने पर (3\(4^2\)+2=50) है। पहले वर्ग निकालें और फिर गुणा करें।
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