यदि \(a_1=15\) और \(a_{n+1}=a_n-n\) है तो \(a_5\) क्या होगा?
If \(a_1=15\) and \(a_{n+1}=a_n-n\), what is \(a_5\)?
Explanation opens after your attempt
A. (7)
Concept
The terms are (15,14,12,9,5), so \(a_5=5\). None of the listed options is correct.
Why this answer is correct
The correct answer is A. (7). The terms are (15,14,12,9,5), so \(a_5=5\). None of the listed options is correct.
Exam Tip
पद (15,14,12,9,5) नहीं बल्कि \(a_5=5\) होता है। दिए गए विकल्पों में सही मान नहीं है।
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