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Mathematics 6 Online
OpenStudy (anonymous):

A class has 20 students of which 12 are females and 8 are males. In how many ways can a committee of 5 students be picked from this class if no males are to be included in the committee?

OpenStudy (anonymous):

So really the number of 8 male students is useless

OpenStudy (anonymous):

12*11*10*9*8 = ? After every student is picked she cant be picked again. And there are 5 member is the committee.

OpenStudy (anonymous):

So a female student cant be picked twice?

OpenStudy (anonymous):

Pretty sure only 1 person can be running for a position.

OpenStudy (anonymous):

hmmm

OpenStudy (anonymous):

Well I think of it as there are 12 possible people to do this and only 5 to a group so I set it up as 12*5=

OpenStudy (anonymous):

its 60 from what I am guessing

OpenStudy (anonymous):

I get 94050

OpenStudy (anonymous):

95040

OpenStudy (anonymous):

No thats obviously too much xD

OpenStudy (anonymous):

That is each possible combination that we can have. 60 is too little.

OpenStudy (anonymous):

If there has to be atleast one different student in each group its 60 but if they have to be in different positions every time then you could do what I did with numbers 1, 2, 3, 4, 5 then 2, 1, 4, 5, 3 etc

OpenStudy (anonymous):

But still we are talking about 12 girls maybe if we added them instead of multiplying

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