यदि \(a_n=5\cdot3^{n-1}\) है, तो \(a_5\) का मान क्या होगा?
If \(a_n=5\cdot3^{n-1}\), what is the value of \(a_5\)?
Explanation opens after your attempt
C. (405)
Concept
\(a_5=5\cdot3^4=405\). First find the value of (n-1) in the exponent.
Why this answer is correct
The correct answer is C. (405). \(a_5=5\cdot3^4=405\). First find the value of (n-1) in the exponent.
Exam Tip
\(a_5=5\cdot3^4=405\)। घात में (n-1) का मान पहले निकालें।
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