SOLUTION: How many five-digit zip codes are possible if digits can be repeated? If there cannot be repetitions?

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Question 660091: How many five-digit zip codes are possible if digits can be repeated? If there cannot be repetitions?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How many five-digit zip codes are possible if digits can be repeated?
Each digit position can have any of 10 digits.
Ans: 10^5 = 100,000
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If there cannot be repetitions?
10*9*8*7*6 = 30,240
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Cheers,
Stan H.