Six persons in an organization including A and B were to be divided in two groups of 3 members each. The total number of groups containing both A and B is what fraction of the total number of groups which can be formed?  Choose the correct choice from the following.
A) 3/10
B) 1/70
C) 3/14
D) 1/10
E) 11/14
The fraction is nothing but the probability..   Number to choose 3 out of 6= 6C3   Number to choose A and B and 2 from remaining 4=4C2..   prob of 3/10 and B choosen=4C2/6C3=3/10   3/10nswer : 3/10
<result>A</result>
Six persons in an organization including A and B were to be divided in two groups of 3 members each. The total number of groups containing both A and B is what fraction of the total number of groups which can be formed?