1.

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?

A. $$ 10 over21$$
B. $$ 11 over21$$
C. $$ 2 over7$$
D. $$ 5 over7$$
E. None of these
Answer» B. $$ 11 over21$$


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