Put four different letters into three postboxes,How many different ways are there?

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Putfourdifferentlettersintothreepostboxes,Howmanydifferentwaysarethere?Putfourdifferentlettersintoth

Put four different letters into three postboxes,How many different ways are there?
Put four different letters into three postboxes,How many different ways are there?

Put four different letters into three postboxes,How many different ways are there?
4* 3 * 2 = 24种组合

4* 3 * 2 = 24种组合