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SAT Math Practice Question #26411 - SATify | SATify

#26411

probability

combinatorics

Relative Motion

hard

120 sec

Eight points are spaced around at intervals of one unit around a $2 \times 2$ square, as shown in the image. Two of the 8 points are chosen at random. What is the probability that the two points are one unit apart?

A.

$\frac{1}{4}$

B.

$\frac{2}{7}$

C.

$\frac{4}{11}$

D.

$\frac{1}{2}$

E.

$\frac{4}{7}$