A bag contains 3 red, 4 blue and 4 green balls. If 2 ballsare picked at random, what is the probability that both are red?
Options
A) 2/15  B) 2/21  C) 3/55  D) 3/29  E) 4/27
P(Both are red),   =33/552113/552=33/552113/552   =3/55   3/55
<result>C</result>
A bag contains 3 red, 4 blue and 4 green balls. If 2 ballsare picked at random, what is the probability that both are red?