Posted by PLEASE HELPPP on .
Assume that a committee consists of 12 people including the chairperson and that the chairperson must select a committee of 3 people from the other 11 members of the committee.
In how many ways can this be done?
So....I tried 11*10*9 because im not counting the chairperson (starting with 11)...and then there are three other positions. it is the wrong answer tho and im not sure what I'm doing wrong. pleaseeee help!

math 
Anonymous,
165