## Permutations Combinations IB maths HL

Discussions for the Core part of the syllabus. Algebra, Functions and equations, Circular functions and trigonometry, Vectors, Statistics and probability, Calculus. IB Maths HL Revision Notes

### Permutations Combinations IB maths HL

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
Jack

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Joined: Mon Jan 28, 2013 8:08 pm

### Re: Permutations Combinations IB maths HL

Permutations, Combinations - IB Maths HL

The males can be chosen by $^4\mathrm{C}_2$ ways

The females, can be chosen by $^8\mathrm{C}_3$ ways

So, the members of this committee can be chosen by

$^4\mathrm{C}_2 \cdot ^8\mathrm{C}_3 =$

$=6 \cdot 56 =336$ ways.

Hope these help!!
elizabeth

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Joined: Mon Jan 28, 2013 8:09 pm

### Re: Permutations Combinations IB maths HL

elizabeth wrote:Permutations, Combinations - IB Maths HL

The males can be chosen by $^4\mathrm{C}_2$ ways

The females, can be chosen by $^8\mathrm{C}_3$ ways

So, the members of this committee can be chosen by

$^4\mathrm{C}_2 \cdot ^8\mathrm{C}_3 =$

$=6 \cdot 56 =336$ ways.

Hope these help!!

Thank you Elisabeth!!
Jack

Posts: 0
Joined: Mon Jan 28, 2013 8:08 pm