यदि \(a_1=6\) और \(a_{n+1}=a_n+n^2+2n\) है तो \(a_4\) क्या होगा?
If \(a_1=6\) and \(a_{n+1}=a_n+n^2+2n\), what is \(a_4\)?
Explanation opens after your attempt
C. (32)
Concept
The terms are (6,9,17,32), so \(a_4=32\). Exam tip: calculate the new value of \(n^2+2n\) each time.
Why this answer is correct
The correct answer is C. (32). The terms are (6,9,17,32), so \(a_4=32\). Exam tip: calculate the new value of \(n^2+2n\) each time.
Exam Tip
पद (6,9,17,32) हैं इसलिए \(a_4=32\) है। \(n^2+2n\) का मान हर बार नया निकालें।
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