Four person are chosen at random from a group of 3 men, 2 women and 4 children. The chance that exactly 2 of them are children, is  Options.
A) 1/9
B) 1/5
C) 1/12
D) 10/21
E) 4/6
n(S)=9C4=126   n(E)=4C2x5C2=60   P(E)=10/21   ANSWER 10/21 10/21
<result>D</result>
Four person are chosen at random from a group of 3 men, 2 women and 4 children. The chance that exactly 2 of them are children, is