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#1 2011-12-14 03:46:23
- juantheron
- Member
- Registered: 2011-10-19
- Posts: 312
persons sitting in a row
if n persons are sitting in a row . 2 persons are selected at random then find the probability that these 2 selected person are not sitting together
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#2 2011-12-14 04:09:50
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: persons sitting in a row
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3 2011-12-14 04:49:17
- juantheron
- Member
- Registered: 2011-10-19
- Posts: 312
Re: persons sitting in a row
yes bobbym got it.
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#4 2011-12-14 05:03:14
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: persons sitting in a row
Hi;
Okay, remember there are always n-1 groups that are next to each other in a row of n objects.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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