यदि \(a_1=150\) और (a_{n+1}=a_n-\(n^2+2n\)) है तो \(a_5\) क्या होगा?
If \(a_1=150\) and (a_{n+1}=a_n-\(n^2+2n\)), what is \(a_5\)?
Explanation opens after your attempt
B. (100)
Concept
The subtracted values are (3,8,15,24), so \(a_5=100\). Exam tip: write all changing subtractions separately first.
Why this answer is correct
The correct answer is B. (100). The subtracted values are (3,8,15,24), so \(a_5=100\). Exam tip: write all changing subtractions separately first.
Exam Tip
घटने वाले मान (3,8,15,24) हैं इसलिए \(a_5=100\) है। पहले सभी बदलते घटावों को अलग लिखें।
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