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27 May, 21:12

If No Digit Appears More Than Once, How Many 3-Digit Numbers Can Be Formed From The Digits 2, 3, 4, 6, And 7? How Did You Receive That Answer?

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  1. 27 May, 21:23
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    5P4 = 5! / (5-4) ! = 5*4*3*2 = 120
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