The probability that none of the shoes are black is:
The probability of the shoe that black is: 0.2
The probability of the shoe that is not black is: 0.8
Black: 0.2
Not black: 0.8
Since we’re looking for the probability of the shoe that is not black and there are 3 in a row, the answer will be = 0.8^3
= 0.8^3 will give you the equivalent of 0.512
If changed in percent form, the answer will be: 51.2%