The area of a lily pond covered by leaves doubled every day. If the pond was covered with leaves on the 16th day, on which day was the pond half - covered with leaves ?
The 15 th day it was 1/2 covered.....then it doubled to total coverage on day 16
15. :))
At 15 it'll be 1/2.
Then at 16, it'll be 1 (1/2*2)
=^._.^=