There are 4 balls of different colors and 4 corresponding boxes of the same four colours. If the balls into the boxes at random, what is the probability that exactly two balls were put into the same colored boxes?
A) 1/4
B) 1/8
C) 1/6
D) 1/24
E) 3/32
Solution (Posted on Jan 12th):
Answer is E, r g b w ¼ * ¼ * ¼ * ¼ * 4c2 = 6/ 64 = 3/ 32
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