A bag contains 5 red, 6 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) 5/26
D) 3/29
E) 4/27
P(2/21oth are red),   =5C215C2=5C215C2   =10/105=2/21   2/21
<result>B</result>
A bag contains 5 red, 6 blue and 4 green balls. If 2 ballsare picked at random, what is the probability that both are red?