SOLUTION: How many functions are there from a set with three elements to a set with two elements?

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Question 1028125: How many functions are there from a set with three elements to a set with two elements?

Answer by richard1234(7193) About Me  (Show Source):
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Assuming a total function (i.e. all elements in the domain are mapped), then there are 2*2*2 = 8 possible functions since each input has two possible outputs.