EXAMINATION EX(AA)MINTION ===> 10!/(2!*2!) = 907200.
In how many ways the letters of the word ‘CHEKOSLOVAKIA’ can be arranged such that “SL” always comes together and ‘H’ and ‘I’ at the end places?
A mixed doubles tennis game is to be played between two teams (each team consists of one male and one female). There are four married couples. No team is to consist of a husband and his wife.
What is the maximum number of games that can be played?
