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| ABC = A! + B! + C! (Posted on 2008-09-13) |
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Find, analytically, all three digit numbers that equal the sum of the factorials of their digits. That is:
ABC = A! + B! + C!
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Submitted by pcbouhid
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Solution:
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The answer is 145 = 1! + 4! + 5!
See Dej Marīs and Gamerīs solutions in the comments.
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