A basket contains 5 blue, 4 green and 3 red ball. If three balls are picked at random, what is the probability that at least one is red ?
A). 31/58
B). 32/51
C). 34/55
D). 37/52
34/55
Probability of having no red ball is
9C3 / 12C3 = 21/55
Probability of having at least one red ball is 1 - 21/55 = 34/55