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| Question 262840:  If no digit appears more than once, how many 4-digit numbers can be formed from the digits 2, 3, 4, 6, and 7
 Answer by stanbon(75887)
      (Show Source): 
You can put this solution on YOUR website! If no digit appears more than once, how many 4-digit numbers can be formed from the digits 2, 3, 4, 6, and 7 5P4 = 5!/(5-4)! = 5*4*3*2 = 120
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 Cheers,
 Stan H.
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