A committee that includes 6 members is about to be divided into 2 subcommittees with 3 members each. On what percent of the possible subcommittees that Michael is a member of is David also a member? Choose the correct option.
A) 10%
B) .20%
C) 25%
D) 40%
E) 50%
there are only 2 possibility : either they both are in same team or in another team.   so probability to be in same team = 50 percernt   hence 50%
<result>E</result>
A committee that includes 6 members is about to be divided into 2 subcommittees with 3 members each. On what percent of the possible subcommittees that Michael is a member of is David also a member?