Question 1191409: How many three-digit numbers can be formed from the digits 1,2,3,4:
A. If repetition of the digits is permitted?
B. If repetition of the digits is not permitted?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! How many three-digit numbers can be formed from the digits 1,2,3,4:
A. If repetition of the digits is permitted?
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Each selection is 1 of 4. What do you think?
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B. If repetition of the digits is not permitted?
The 1st selection is 1 of 4, then 1 of 3, then 1 of 2.
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