Arthur D. answered 01/30/15
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you have 7 men and 7 women
you have 3 tasks
2 women and 1 man can do the tasks, or, 2 men and 1 woman can do the tasks
2 women and 1 man...
how many ways can you select 2 women from 7 women ?
7!/2!(7-2)!=7!/2!5!=7*6/2=21 ways
each group of 2 women can be paired with 1 of 7 men
21*7=147 ways
2 men and 1 woman...
the math is the same because you have 7 men and 7 women
21 ways to group the men by 2s
each group of 2 men can be paired with 1 of 7 women
21*7=147 ways
147+147=294 ways