यदि \(a_n=3n^2\) है, तो \(a_2\) का मान क्या है?
If \(a_n=3n^2\), what is the value of \(a_2\)?
Explanation opens after your attempt
A. (12)
Concept
Putting (n=2), (a_2=3\(2^2\)=12). First square (n).
Why this answer is correct
The correct answer is A. (12). Putting (n=2), (a_2=3\(2^2\)=12). First square (n).
Exam Tip
(n=2) रखने पर (a_2=3\(2^2\)=12) है। पहले (n) का वर्ग निकालें।
Login to save your score, XP, coins and progress.
