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Find all three-digit numbers \(\overline{ABC}\) such that \(\overline{ABC} = A! + B! + C!\)

 May 4, 2020
 #1
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ABC =A! + B! + C!

145  = 1!  + 4!  + 5! =1 + 24 + 120 =145

 May 4, 2020

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