यदि \(a_1=120\) और (a_{n+1}=a_n-(3n+2)) है तो \(a_4\) क्या होगा?
If \(a_1=120\) and (a_{n+1}=a_n-(3n+2)), what is \(a_4\)?
Explanation opens after your attempt
A. (96)
Concept
The terms are (120,115,107,96), so \(a_4=96\). Exam tip: calculate (3n+2) before subtracting.
Why this answer is correct
The correct answer is A. (96). The terms are (120,115,107,96), so \(a_4=96\). Exam tip: calculate (3n+2) before subtracting.
Exam Tip
पद (120,115,107,96) हैं इसलिए \(a_4=96\) है। घटाने से पहले (3n+2) निकालें।
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