SOLUTION: three men and three women line up at a checkout counter. In how many ways can they line up?

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Question 217180: three men and three women line up at a checkout counter. In how many ways can they line up?
Answer by shymeerab(21) About Me  (Show Source):
You can put this solution on YOUR website!
total 6 persons.then they can lineup in 64 different ways here i use a formula (2^n.where n=6)i hope u can now easily solve problems of this type.