यदि \(a_1=120\) और (a_{n+1}=a_n-\(2^n+n\)) है तो \(a_5\) क्या होगा?
If \(a_1=120\) and (a_{n+1}=a_n-\(2^n+n\)), what is \(a_5\)?
Explanation opens after your attempt
C. (80)
Concept
The subtracted values are (3,6,11,20), so \(a_5=80\). Exam tip: write values of \(2^n+n\) first.
Why this answer is correct
The correct answer is C. (80). The subtracted values are (3,6,11,20), so \(a_5=80\). Exam tip: write values of \(2^n+n\) first.
Exam Tip
घटने वाले मान (3,6,11,20) हैं इसलिए \(a_5=80\) है। \(2^n+n\) के मान पहले लिखें।
Login to save your score, XP, coins and progress.
