यदि (a_n=\frac{n(n+3)}{2}) है, तो \(a_6\) क्या होगा?
If (a_n=\frac{n(n+3)}{2}), what is \(a_6\)?
Explanation opens after your attempt
B. (27)
Concept
(a_6=\frac{6(9)}{2}=27). Multiply or simplify before dividing.
Why this answer is correct
The correct answer is B. (27). (a_6=\frac{6(9)}{2}=27). Multiply or simplify before dividing.
Exam Tip
(a_6=\frac{6(9)}{2}=27)। भाग देने से पहले गुणा करें या सरल करें।
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