यदि \(a_1=4\) और (a_{n+1}=a_n+\frac{n(n+3)}{2}) है तो \(a_5\) क्या होगा?
If \(a_1=4\) and (a_{n+1}=a_n+\frac{n(n+3)}{2}), what is \(a_5\)?
Explanation opens after your attempt
C. (34)
Concept
The added values are (2,5,9,14), so \(a_5=34\). Exam tip: simplify the fractional increment first.
Why this answer is correct
The correct answer is C. (34). The added values are (2,5,9,14), so \(a_5=34\). Exam tip: simplify the fractional increment first.
Exam Tip
जुड़ने वाले मान (2,5,9,14) हैं इसलिए \(a_5=34\) है। भिन्न वाले जोड़ को पहले सरल करें।
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