Venn Diagram/Sets

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ranvijay87: Junior | Next Rank: 30 Posts; Posts: 12; Joined: Mon Oct 26, 2009 11:06 am; Location: Chandigarh,India

Venn Diagram/Sets

by ranvijay87 » Sat Mar 31, 2012 9:57 am

Hi,
Please help me with the formulas used in Venn Diagrams.
I have come across plenty of them.

aubuc = a + b + c -aandb - bandc - canda + aandbandc (atleast 2)

aubuc = a + b + c - aandb - bandc - canda - 2(aandbandc)

There are more for atleast 1 set and exactly 1 set.
It has left me confused as i am unable to decide which one to apply for a specific problem.

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PGMAT: Senior | Next Rank: 100 Posts; Posts: 73; Joined: Fri Jul 23, 2010 1:30 pm

by PGMAT » Sat Mar 31, 2012 4:06 pm

Check this, should answer your questions.
https://gmatclub.com/forum/formulae-for- ... 69014.html

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