यदि \(a_1=50\) और (a_{n+1}=a_n-(2n+3)) है तो \(a_4\) क्या होगा?
If \(a_1=50\) and (a_{n+1}=a_n-(2n+3)), what is \(a_4\)?
Explanation opens after your attempt
A. (29)
Concept
The terms are (50,45,38,29), so \(a_4=29\). Exam tip: calculate (2n+3) before subtracting.
Why this answer is correct
The correct answer is A. (29). The terms are (50,45,38,29), so \(a_4=29\). Exam tip: calculate (2n+3) before subtracting.
Exam Tip
पद (50,45,38,29) हैं इसलिए \(a_4=29\) है। (2n+3) को घटाने से पहले सही मान निकालें।
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