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GMAT Set Theory

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Junior | Next Rank: 30 Posts
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GMAT Set Theory

by marepally » Thu Sep 11, 2008 2:55 pm
Is the following formula correct?


In sets, A, B, C.

No of persons in atleast one set:

P(A) + P(B) + P(C) - P(AnB) - P(AnC) - P(BnC) + 2 P(AnBnC)

I believe that the following is correct:

P(A) + P(B) + P(C) - P(AnB) - P(AnC) - P(BnC) + P(AnBnC)

Thanks in Advance !



[/u]
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Master | Next Rank: 500 Posts
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by bluementor » Fri Sep 12, 2008 2:20 am
Hi there,

check this out...it will probably help with your query.

https://www.gmathacks.com/gmat-math/thre ... -sets.html

BlueMentor
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