Question 818110: how many three digit natural numbers can be named with each of the digits 5, 6, 7 and 8 used at most once
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! how many three digit natural numbers can be named with each of the digits 5, 6, 7 and 8 used at most once
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1st digit: 4 ways
2nd digit: 3 ways
3rd digit: 2 ways
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Total = 4P3 = 4!/1! = 4*3*2 = 24 numbers
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Cheers,
Stan H.
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