यदि \(a_n=n^2+2n\) है, तो \(a_8\) का मान क्या होगा?
If \(a_n=n^2+2n\), what is the value of \(a_8\)?
Explanation opens after your attempt
C. (80)
Concept
(a_8=82+2(8)=80). Do the square and multiplication in order.
Why this answer is correct
The correct answer is C. (80). (a_8=82+2(8)=80). Do the square and multiplication in order.
Exam Tip
(a_8=82+2(8)=80)। वर्ग और गुणा को क्रम से करें।
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