SOLUTION: How many five-letter "words" can be made from the letters A,B,C,D,E,F,G,H,I,J if repletion (a)is allowed or (b) is not allowed?

SOLUTION: How many five-letter "words" can be made from the letters A,B,C,D,E,F,G,H,I,J if repletion (a)is allowed or (b) is not allowed?

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Question 879874: How many five-letter "words" can be made from the letters A,B,C,D,E,F,G,H,I,J if repletion (a)is allowed or (b) is not allowed?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
There are 10 letters available and 5 positions.
a)
b)
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