10men and 10 women are there, they dance with each other, is there possibility that 2 men are dancing with same women and vice versa?  Select:
A) 22	B) 20	C) 13	D) 5	E) none
in question they gave "they dance with each other" , so there is no possibility that 2 men are dancing with same women...   ANSWnoneR:none
<result>E</result>
10men and 10 women are there, they dance with each other, is there possibility that 2 men are dancing with same women and vice versa?