A bag contains 3 red, 3 green and 3 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?
Select the correct option:	A) 5/7	B) 11/14	C) 16/21	D) 19/28	E) 23/35
P(no red balls) = 6/9*5/8*4/7 = 5/21   P(at least one red ball) = 1 - 5/21 = 16/21   The answer is 16/21.
<result>C</result>
A bag contains 3 red, 3 green and 3 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?