SOLUTION: How many different 4-Digit numbers can be formed from digits 1-4 if the digits can repeat? if they cant?

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Question 839511: How many different 4-Digit numbers can be formed from digits 1-4 if the digits can repeat? if they cant?
Answer by swincher4391(1107) About Me  (Show Source):
You can put this solution on YOUR website!
If they can: There are 4 spots for each digit so 4^4 =
256 permutations
If they cant: 4 spots for the 1st digit, 3 spots for the 2nd digit ... etc
So there are 4*3*2*1 = 24 permutations.