There are 10 students and 7 teachers. Four members of the committee are to be choosen from them randomly. What is the probability of the committee having more than 1 students?
I have been trying to use the n!/n!(n-r) formula, but I dont' know how to plug the things in properly. Please help!
I think you should divide this problem into several cases.
Originally Posted by tttcomrader
And add them up to get your answer.
There is an easier way.
Since we want either 1,2,3, or all 4.
Find the probably of its negation, that is, 0.
Then 1 (total probability) subtract this result.
To get the same answer.