SOLUTION: How many 3 digit numbers can be formed from the digits 1,3,5 and 7 if repetitions are allowed?

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Question 849407: How many 3 digit numbers can be formed from the digits 1,3,5 and 7 if repetitions are allowed?
Answer by LinnW(1048) About Me  (Show Source):
You can put this solution on YOUR website!
(4)(4)(4) -- four ways to fill each slot
So we have 64 possibilities.