UFOD - Useless Fact of the Day
A useless fact, more like every month...
Tuesday, October 11, 2011
145 = 1! + 4! + 5!
145 = 1! + 4! + 5!
1! = 1
4! = 4*3*2*1 = 24
5! = 5*4*3*2*1 = 120
120 + 24 + 1 = 145
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