Maths-
General
Easy
Question
In how many ways can 2n people be divided into n couples -
- (2n !)/ (2 !)n n !
- (2n !)/ (2 !)n
- (2n !)n / (2 !)n n !
- None of these
The correct answer is: (2n !)/ (2 !)n n !
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