यदि \(a_n=5\cdot2^{n-1}\) है, तो \(a_5\) का मान क्या होगा?
If \(a_n=5\cdot2^{n-1}\), what is the value of \(a_5\)?
Explanation opens after your attempt
B. (80)
Concept
\(a_5=5\cdot2^4=80\). In exams, apply the exponent (n-1) carefully.
Why this answer is correct
The correct answer is B. (80). \(a_5=5\cdot2^4=80\). In exams, apply the exponent (n-1) carefully.
Exam Tip
\(a_5=5\cdot2^4=80\) है। परीक्षा में (n-1) वाला घातांक ध्यान से लगाएँ।
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