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find how many numbers greater than 4000 that can be formed with digits 2,3,4,5 and 6 if no digits can be used more than once in a number.
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find how many numbers greater than 4000 that can be formed with digits 2,3,4,5 and 6 if no digits can be used more than once in a number.

User AscendingEagle
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1 Answer

7 votes
All 5 digit numbers 5! = 120
All 4 digit numbers begining with 4,5 of 6:3*4*3*2 = 3*4! = 72
Total = 120+72 = 192

192
User Joe Crozier
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