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 \(a_4\)?
Explanation opens after your attempt
C. (86)
Concept
The terms are (100,98,94,86), so \(a_4=86\). Exam tip: subtract the values of \(2^n\) in order.
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.
Exam Tip
पद (100,98,94,86) हैं इसलिए \(a_4=86\) है। \(2^n\) के मान क्रम से घटाएँ।
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