( \frac{(n+1)!+n!}{(n-1)!} ) का सरल रूप क्या है?
What is the simplified form of ( \frac{(n+1)!+n!}{(n-1)!} )?
Explanation opens after your attempt
Correct Answer
B. (n(n+2))
Concept
((n+1)!+n!=n!((n+1)+1)=n!(n+2)), so the answer is (n(n+2)). First take (n!) as the common factor.
Why this answer is correct
The correct answer is B. (n(n+2)). ((n+1)!+n!=n!((n+1)+1)=n!(n+2)), so the answer is (n(n+2)). First take (n!) as the common factor.
Exam Tip
((n+1)!+n!=n!((n+1)+1)=n!(n+2)), इसलिए उत्तर (n(n+2)) है। पहले (n!) को सामान्य फैक्टर बनाएं।
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