यदि (\frac{n!}{(n-5)!}=55440) है तो (n) का मान क्या है?
If (\frac{n!}{(n-5)!}=55440) then what is the value of (n)?
Explanation opens after your attempt
B. (11)
Concept
This is (n(n-1)(n-2)(n-3)(n-4)=55440). Since \(11\times10\times9\times8\times7=55440\), (n=11).
Why this answer is correct
The correct answer is B. (11). This is (n(n-1)(n-2)(n-3)(n-4)=55440). Since \(11\times10\times9\times8\times7=55440\), (n=11).
Exam Tip
यह (n(n-1)(n-2)(n-3)(n-4)=55440) है। \(11\times10\times9\times8\times7=55440\) इसलिए (n=11) है।
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