यदि \(a_n=3^n\) है, तो \(a_4\) क्या होगा?
If \(a_n=3^n\), what is \(a_4\)?
Explanation opens after your attempt
C. (81)
Concept
\(a_4=3^4=81\). Put (4) in place of (n) in the exponential term.
Why this answer is correct
The correct answer is C. (81). \(a_4=3^4=81\). Put (4) in place of (n) in the exponential term.
Exam Tip
\(a_4=3^4=81\)। घात वाले पद में (n) की जगह (4) रखें।
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