Is this an equivalent formula for P(A or B or C) ?

Thread starter opticaltempest
Start date Mar 8, 2007
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Equivalent Formula

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opticaltempest

Thread starter
Mar 8, 2007

I was trying to derive a formula to find [tex]P(A \cup B \cup C)[/tex].

I came up with the following:

http://img249.imageshack.us/img249/2154/probabilitymp7.jpg

Is that correct?

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IMDerek

Mar 8, 2007

Yes it's correct

ZioX

Mar 8, 2007

See Principle of Inclusion-Exclusion for the general result.

http://en.wikipedia.org/wiki/Inclusion_exclusion

Is this an equivalent formula for P(A or B or C) ?

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