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?

2 L A T E S T R E P L I E S (Newest First)

raghu

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.

Subhotosh Khan

Posted - 10/11/2010 : 19:56:45

quote:Originally posted by raghu

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?

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.