( \frac{(n!)2}{(n-1)!(n+1)!} ) का सरल रूप क्या है?
What is the simplified form of ( \frac{(n!)2}{(n-1)!(n+1)!} )?
Explanation opens after your attempt
Correct Answer
C. \( \frac{n}{n+1} \)
Concept
( \frac{n!}{(n-1)!}=n ) and ( \frac{n!}{(n+1)!}=\frac{1}{n+1} ), so the answer is \( \frac{n}{n+1} \). Break the ratio into two smaller parts.
Why this answer is correct
The correct answer is C. \( \frac{n}{n+1} \). ( \frac{n!}{(n-1)!}=n ) and ( \frac{n!}{(n+1)!}=\frac{1}{n+1} ), so the answer is \( \frac{n}{n+1} \). Break the ratio into two smaller parts.
Exam Tip
( \frac{n!}{(n-1)!}=n ) और ( \frac{n!}{(n+1)!}=\frac{1}{n+1} ), इसलिए उत्तर \( \frac{n}{n+1} \) है। अनुपात को दो छोटे भागों में तोड़ें।
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