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Lookingfor700GMAT
- Senior | Next Rank: 100 Posts
- Posts: 39
- Joined: Mon Feb 08, 2010 12:41 pm
In a certain group of 10 members, 4 members teach only French and the rest teach only Spanish or German. If the group is to choose a 3 member committee who must have at least one member who teaches French, how many different committees can be chosen?
The answer is 100 but I was unsure how to account for "at least 1 member who speaks French. I thought I would use the combination formula for the remaining two places so 6!/4!2! but I wasn't sure how to get to a 100.
The answer is 100 but I was unsure how to account for "at least 1 member who speaks French. I thought I would use the combination formula for the remaining two places so 6!/4!2! but I wasn't sure how to get to a 100.
