A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?  Choose one
A) 10/21 B) 11/21 C) 2/7 D) 5/7 E) 13/21
5c2/7c2=10/21   10/21NSWER:10/21
<result>A</result>
A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?