यदि ( \frac{(2n)!}{(2n-2)!}=132 ), तो (n) का मान क्या है?
If ( \frac{(2n)!}{(2n-2)!}=132 ), what is the value of (n)?
Explanation opens after your attempt
B. (6)
Concept
(2n(2n-1)=132) and \(12\cdot11=132\), so (n=6). Treat ((2n)) as one number first.
Why this answer is correct
The correct answer is B. (6). (2n(2n-1)=132) and \(12\cdot11=132\), so (n=6). Treat ((2n)) as one number first.
Exam Tip
(2n(2n-1)=132) और \(12\cdot11=132\), इसलिए (n=6) है। पहले ((2n)) को एक संख्या की तरह मानें।
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