यदि (a_n=n(n+2)) है तो \(a_7\) का मान क्या होगा?
If (a_n=n(n+2)) then what is the value of \(a_7\)?
Explanation opens after your attempt
D. (63)
Concept
\(a_7=7\times9=63\). In exams keep both (n) and (n+2) correct.
Why this answer is correct
The correct answer is D. (63). \(a_7=7\times9=63\). In exams keep both (n) and (n+2) correct.
Exam Tip
\(a_7=7\times9=63\) है। परीक्षा में (n) और (n+2) दोनों सही रखें।
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