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The product of the digits of 3214 is 24. How many distinct four-digit positive integers are such that the product of their digits equals 24?

 Aug 12, 2021
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There are: 4! ==24 such numbers

 

1234  1243  1324  1342  1423  1432  2134  2143  2314  2341  2413  2431  3124  3142  3214  3241  3412  3421  4123  4132  4213  4231  4312  4321  Total =  24

 Aug 13, 2021

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