यदि \(a_1=5\) और (a_{n+1}=a_n+(n+1)!) है तो \(a_4\) क्या होगा?
If \(a_1=5\) and (a_{n+1}=a_n+(n+1)!), what is \(a_4\)?
Explanation opens after your attempt
B. (39)
Concept
The added values (2!,3!,4!) are (2,6,24), so \(a_4=37\). Exam tip: calculate factorial increments in order.
Why this answer is correct
The correct answer is B. (39). The added values (2!,3!,4!) are (2,6,24), so \(a_4=37\). Exam tip: calculate factorial increments in order.
Exam Tip
जुड़ने वाले मान (2!,3!,4!) यानी (2,6,24) हैं इसलिए \(a_4=37\) है। सही विकल्पों में (37) होना चाहिए।
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