Find, analytically, all three digit numbers that equal the sum of the factorials of their digits. That is:

ABC = A! + B! + C!

(In reply to re: Answer --------------- are you sure? by pcbouhid)

You're right, PCB.

I made the silly mistake of disregarding the quantity in the lhs of the given equation, and hence the erroneous advent of the perms.

I confirm having incorporated the requisite amendments in accordance with the foregoing in the  original post.

Edited on January 2, 2009, 4:10 pm

Posted by K Sengupta on 2009-01-02 14:04:31