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Math Forum » Discussions » sci.math.* » sci.math.independent

Topic: how many ways to pick two teams of 10 out of a group of 20 people
Replies: 12   Last Post: Feb 5, 2013 2:20 PM

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fom

Posts: 1,033
Registered: 12/4/12
Re: how many ways to pick two teams
Posted: Feb 5, 2013 3:05 AM
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On 2/5/2013 1:48 AM, William Elliot wrote:
> On Mon, 4 Feb 2013, G Patel wrote:
>
>> Is it 20 choose 10 or do I have to divide by 2?
>>
> What's it?
>

What do you mean by picking teams? Combinations
are without regard to order, whereas two team
captains will try to make the best pick at
each opportunity to choose...

20*18*16*14*12*10*8*6*4*2

19*17*15*13*11*9*7*5*3*1

Better mathematicians than I will know
how to say this properly.

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