GRE
The total area of the regions shaded black
The total area of the regions shaded gray
The probability that Dana will not get a busy signal in each of 4 different attempts to telephone Carla
$$\frac{1}{4}$$
The number of positive integers less than 50 that are the product of 2 different prime numbers greater than 2
5
The probability that Jessica`s car will be repaired today
$$\frac{1}{3}$$
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