यदि \(a_1=100\) और \(a_{n+1}=a_n-2^n\) है तो \(a_4\) क्या होगा?

If \(a_1=100\) and \(a_{n+1}=a_n-2^n\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

C. (86)

Step 1

Concept

The terms are (100,98,94,86), so \(a_4=86\). Exam tip: subtract the values of \(2^n\) in order.

Step 2

Why this answer is correct

The correct answer is C. (86). The terms are (100,98,94,86), so \(a_4=86\). Exam tip: subtract the values of \(2^n\) in order.

Step 3

Exam Tip

पद (100,98,94,86) हैं इसलिए \(a_4=86\) है। \(2^n\) के मान क्रम से घटाएँ।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=100\) और \(a_{n+1}=a_n-2^n\) है तो \(a_4\) क्या होगा? / If \(a_1=100\) and \(a_{n+1}=a_n-2^n\), what is \(a_4\)?

Correct Answer: C. (86). Explanation: पद (100,98,94,86) हैं इसलिए \(a_4=86\) है। \(2^n\) के मान क्रम से घटाएँ। / The terms are (100,98,94,86), so \(a_4=86\). Exam tip: subtract the values of \(2^n\) in order.

Which concept should I revise for this Mathematics MCQ?

The terms are (100,98,94,86), so \(a_4=86\). Exam tip: subtract the values of \(2^n\) in order.

What exam hint can help solve this Mathematics question?

पद (100,98,94,86) हैं इसलिए \(a_4=86\) है। \(2^n\) के मान क्रम से घटाएँ।