Troubling TreeAlgebra Level 2
Assume that there is a tree that grows in such a way that its height on a given day is twice what it was on the previous day. For example, the tree was 1 meter tall on first day, 2 meters tall on the second, 4 meters tall on the third day, and so on.
On the 50th day, it reached its full length. On which day it was just half the full length?