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raghu
Senior Member

USA
37 Posts

 Posted - 10/10/2010 :  10:14:45 If mixed doubles tennis matches are to be arranged between 7 couples and if no husband and wife want to be in the pair how many ways can you set up the teams?

Subhotosh Khan

USA
9114 Posts

 Posted - 10/11/2010 :  19:56:45 quote:Originally posted by raghuIf mixed doubles tennis matches are to be arranged between 7 couples and if no husband and wife want to be in the pair how many ways can you set up the teams?Raghu - how is it that you never share your work/thought?We do not know where to begin to help you. Hint - Each husband can be teamed up with how many wives? Please share your work with us, indicating exactly where you wre stuck - so that we may know where to begin to help you.

raghu
Senior Member

USA
37 Posts

 Posted - 10/11/2010 :  21:30:09 Subhotosh,This is my thought.2 out of 7 men can be permuted in 7p2 ways and 5p2 for women. Once you choose 2 men and 2women, you can have 4 teams.Therefore 4 * 7p2*5P2.This is my thinking.
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