In a drawer of shirts 8 are blue, 6 are green and 4 are magenta. If Mason draws 2 shirts at random, what is the probability E at least one of the shirts he draws will be blue?
Options:
(A) 25/153
(B) 28/153
(C) 5/17
(D) E=4/9
(E) E=12/17 OK. Let's think. Some random thoughts first:
P(at least one blue) = 1 - P(0 blue) = 1 - 10/18*9/17 = 12/17. The answer: (E).