SOLUTION: how many four digit numbers can be made using only the odd digits if repetition is allowed? Repetition is not allowed?

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Question 956720: how many four digit numbers can be made using only the odd digits if repetition is allowed? Repetition is not allowed?
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
if repetition is allowed
if repetition is not allowed

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