यदि \(a_1=2\) और (a_{n+1}=a_n+n(n+2)) है तो \(a_3\) क्या होगा?
If \(a_1=2\) and (a_{n+1}=a_n+n(n+2)), what is \(a_3\)?
Explanation opens after your attempt
B. (13)
Concept
The terms are (2,5,13), so \(a_3=13\). Exam tip: calculate the product before adding.
Why this answer is correct
The correct answer is B. (13). The terms are (2,5,13), so \(a_3=13\). Exam tip: calculate the product before adding.
Exam Tip
पद (2,5,13) हैं इसलिए \(a_3=13\) है। गुणनफल निकालकर जोड़ना चाहिए।
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