SOLUTION: If no digit may be used more than once, how many five- digit numbers can be formed using only the digits 1,6,7,4,9 and 3
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Question 1087588: If no digit may be used more than once, how many five- digit numbers can be formed using only the digits 1,6,7,4,9 and 3 Answer by ikleyn(52824) (Show Source):
6*5*4*3*2 = 720 ways.
You can select the first digit by 6 ways.
You can select the second digit by any way among remaining 5 digits,
. . . and so on . . .
