Question

In a talent competition, half of the contestants are eliminated in each round. At the end of the nth round, 32 contestants remain. If there were 1,024 contestants at the start of the competition, what is the value of n?

Answer 1

y = y_0 (1/2)^n

where y is the final amount of contestants, y_0 is the starting amount of contestants, n is the number of rounds
you are given y and y_0 solve for n