यदि \(a_1=100\) और (a_{n+1}=a_n-\(2n^2+n\)) है तो \(a_3\) क्या होगा?
If \(a_1=100\) and (a_{n+1}=a_n-\(2n^2+n\)), what is \(a_3\)?
Explanation opens after your attempt
A. (87)
Concept
The terms are (100,97,87), so \(a_3=87\). Exam tip: calculate the new value of \(2n^2+n\) at each step.
Why this answer is correct
The correct answer is A. (87). The terms are (100,97,87), so \(a_3=87\). Exam tip: calculate the new value of \(2n^2+n\) at each step.
Exam Tip
पद (100,97,87) हैं इसलिए \(a_3=87\) है। \(2n^2+n\) का मान हर चरण में नया निकालें।
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