Let [x] denote the closest integer to x.

Find the last 5 digits of [100000!/e]

(In reply to Guess not proof by Kenny M)

I doubt this is correct.  1/e=0.3678794412... an irrational number.  Multiplying this by powers of 10 will shift the decimal but the chance of shifting it to 00000 is remote.

Posted by Jer on 2020-03-27 11:38:49