A bag contains 3 red, 4 green and 4 white balls. Three balls are picked up one by one without replacement. What is the probability that there will be at least one red ball?
Pick:
A) 6/11	B) 27/55	C) 31/55	D) 91/165	E) 109/165
P(no red balls) = 8/11*7/10*6/9 = 56/165   P(at least one red ball) = 1 - 56/165 = 109/165   The answer is 109/165.
<result>E</result>
A bag contains 3 red, 4 green and 4 white balls. Three balls are picked up one by one without replacement. What is the probability that there will be at least one red ball?