यदि ( \frac{(n+2)!}{n!}+\frac{n!}{(n-2)!}=114 ), तो (n) का मान क्या है?
If ( \frac{(n+2)!}{n!}+\frac{n!}{(n-2)!}=114 ), what is the value of (n)?
Explanation opens after your attempt
B. (7)
Concept
The simplified form is \(2n^2+2n+2\). Putting (n=7) gives (98+14+2=114).
Why this answer is correct
The correct answer is B. (7). The simplified form is \(2n^2+2n+2\). Putting (n=7) gives (98+14+2=114).
Exam Tip
सरल रूप \(2n^2+2n+2\) है। (n=7) रखने पर (98+14+2=114) मिलता है।
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