यदि \(a_n=3n^2-2n+5\) है तो \(a_{12}+a_{13}\) का मान क्या होगा?
If \(a_n=3n^2-2n+5\), what will be the value of \(a_{12}+a_{13}\)?
Explanation opens after your attempt
B. (886)
Concept
\(a_{12}=413\) and \(a_{13}=473\), so the sum is (886). Exam tip: calculate both terms separately.
Why this answer is correct
The correct answer is B. (886). \(a_{12}=413\) and \(a_{13}=473\), so the sum is (886). Exam tip: calculate both terms separately.
Exam Tip
\(a_{12}=413\) और \(a_{13}=473\) है इसलिए योग (886) है। दोनों पद अलग-अलग निकालें।
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