Tip
Probability problems may be presented in either a real-life or an abstract setting.
Sample Problem
In a parking lot, there are 60 white cars, 50 gray cars, 20 blue cars, 10 red cars, and no other cars. If a car is to be selected at random from the parking lot, what is the probability that the selected car will not be white?
Answer Options
(A) 1/4
(B) 3/7
(C) 1/2
(D) 4/7
(E) 3/4
View Correct Answer
(D) 4/7
The probability that a car selected is white is 60/140 or 3/7. So the probability that a car selected is not white is 1 − (3/7) = 4/7.
