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ok, thanks !
I agree with John.
Ok, thanks for the fast answer ! And do you have any idea why the answer would be 18/72 (which before was 54/72) and not 6/24 ? Why multiply it by 3 ? Logicaly, the order of the items shouldn't change anything ... ???
I think you are correct and the problem meant to say what is the probabil that the man has one (not none) of these accessori, in which case 3/4 would be he is wearing one of the things. Your iteration of the permutations seems correct. I would stick to your guns. Good Luck.
Hi, please, tell me if my was of solving this problem is good or not : Users of public transport are waiting for the bus: 3 women and 1 man. One of them wears glasses, another gloves, and another a hat. What is the probability that the man has none of these accessories?