Math 110 problem...help?
Ann, Brian, Clark, Dean, Emily, Frank, and Greg are student senators. A committee is being formed that must include atleast one of these senators.
How many different variations for the committee are there?
10 points!
Ann, Brian, Clark, Dean, Emily, Frank, and Greg are student senators. A committee is being formed that must include atleast one of these senators.
How many different variations for the committee are there?
10 points!
Anonymous
Favorite Answer
You must use combinations to solve this one, like so:
7C1 + 7C2 + 7C3 + 7C4 + 7C5 + 7C6 + 7C7
I won't solve it for you, but I will give you everything you need to know to solve it. The formula for combinations is:
nCr = (n!)/[(n-r)!(r!)]
So, simply apply that formula to all of the combinations above then add to get your answer.