There are 5 different cookies in a bag. One of them is your favorite, chocolate chip. What is the probability that you will not get your favorite?
A. one fifth
B. two fifths
C. twenty-four over twenty-five
D. four fifths
The probability of not getting your favorite cookie is the same as the probability of selecting one of the four non-favorite cookies out of the five in the bag. Therefore, the probability is:
4/5 or 0.8, which is answer choice D.
So there is an 80% chance that you will not get your favorite cookie.