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
$$\frac{1}{3}$$
$$x-y$$
$$R$$
The number of different values of $$x$$ that satisfy the equation
3
The number of real roots of $$2x- \frac{4}{7}$$=0
The number of real roots of $$2x^2 + \frac{4}{7}$$=0
x
y
The average (arithmetic mean) of $$a^2$$, $$b^2$$ and $$c^2$$
The median of $$a^2$$, $$b^2$$ and $$c^2$$
The area of a triangle with a perimeter of 40 and a side whose length is 12
72
$$y$$
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