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Permutations Combinations IB maths HL

PostPosted: Wed Jan 22, 2014 7:40 pm
by Jack
Permutations Combinations - IB Math HL _ IB mathematics Higher Level

In a class of 12 students, 4 are male and 8 are female. How can we find the number of committees of 5 members can be formed containing 2 males and 3 females?

Thanks

Re: Permutations Combinations IB maths HL

PostPosted: Wed Jan 22, 2014 7:41 pm
by elizabeth
Permutations, Combinations - IB Maths HL

The males can be chosen by ways

The females, can be chosen by ways


So, the members of this committee can be chosen by




ways.


Hope these help!!

Re: Permutations Combinations IB maths HL

PostPosted: Wed Jan 22, 2014 7:41 pm
by Jack
elizabeth wrote:Permutations, Combinations - IB Maths HL

The males can be chosen by ways

The females, can be chosen by ways


So, the members of this committee can be chosen by




ways.


Hope these help!!




Thank you Elisabeth!!