Question

A computer virus is eating disk space. during the first day it eats 1/2 of the disk. during the second day, it eats 1/3 the remaining disk space. the third day it eats 1/4 of what still remains and the fourth day it eats 1/5 of what is left. what fraction of the original disk space remains intact?

Answer 1

(1/2)*(1/3)*(1/4)*(1/5)=1/120 of the original disk space