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 \(a_5\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (80)

Step 1

Concept

\(a_5=5\cdot2^4=80\). In exams, apply the exponent (n-1) carefully.

Step 2

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.

Step 3

Exam Tip

\(a_5=5\cdot2^4=80\) है। परीक्षा में (n-1) वाला घातांक ध्यान से लगाएँ।

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Mathematics Answer, Explanation and Revision Hints

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 \(a_5\)?

Correct Answer: B. (80). Explanation: \(a_5=5\cdot2^4=80\) है। परीक्षा में (n-1) वाला घातांक ध्यान से लगाएँ। / \(a_5=5\cdot2^4=80\). In exams, apply the exponent (n-1) carefully.

Which concept should I revise for this Mathematics MCQ?

\(a_5=5\cdot2^4=80\). In exams, apply the exponent (n-1) carefully.

What exam hint can help solve this Mathematics question?

\(a_5=5\cdot2^4=80\) है। परीक्षा में (n-1) वाला घातांक ध्यान से लगाएँ।