यदि ( \frac{(n+1)!}{(n-3)!}=5040 ), तो (n) का मान क्या है?
If ( \frac{(n+1)!}{(n-3)!}=5040 ), what is the value of (n)?
Explanation opens after your attempt
C. (9)
Concept
It is ((n+1)n(n-1)(n-2)=5040). Since \(10\cdot9\cdot8\cdot7=5040\), (n=9).
Why this answer is correct
The correct answer is C. (9). It is ((n+1)n(n-1)(n-2)=5040). Since \(10\cdot9\cdot8\cdot7=5040\), (n=9).
Exam Tip
यह ((n+1)n(n-1)(n-2)=5040) है। \(10\cdot9\cdot8\cdot7=5040\), इसलिए (n=9)।
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