यदि ( \frac{(n+1)!}{(n-2)!}=504 ), तो (n) का मान क्या है?
If ( \frac{(n+1)!}{(n-2)!}=504 ), what is the value of (n)?
Explanation opens after your attempt
B. (8)
Concept
((n+1)n(n-1)=504) and \(9\cdot8\cdot7=504\), so (n=8). Identify the middle number as (n).
Why this answer is correct
The correct answer is B. (8). ((n+1)n(n-1)=504) and \(9\cdot8\cdot7=504\), so (n=8). Identify the middle number as (n).
Exam Tip
((n+1)n(n-1)=504) और \(9\cdot8\cdot7=504\), इसलिए (n=8) है। मध्य संख्या (n) को पहचानें।
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