|
okay so are you gonna ask a new question now Billi??
@ orlok: let's just say, from 5! on, it doesn't matter 'cause the last digits of them are all 0s, so the last digit of the whole sum is decided by 1! + 2! + 3! + 4! only, which is 33. So, 3.
Last edited by maianhvk; 06-19-2011 at 05:51 AM.
|