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How to draw a Venn Diagram for problems : Quantitative Questions
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# How to draw a Venn Diagram for problems

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Re: How to draw a Venn Diagram for problems [#permalink]
great job whiplash2411!
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Re: How to draw a Venn Diagram for problems [#permalink]
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Thank you. Added to the list of resources in the Math Book Project
gmat-math-book-87417.html
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Re: How to draw a Venn Diagram for problems [#permalink]
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Thank you
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Re: How to draw a Venn Diagram for problems [#permalink]
Nice whip !!

Probably this can be added as well
formulae-for-3-overlapping-sets-69014.html#p729340
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Re: How to draw a Venn Diagram for problems [#permalink]
This is a great example!

Thanks for posting.

Small note which got me confused for a bit. I believe the answer is 27 not 37 (unless I am missing something).

kamil
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Re: How to draw a Venn Diagram for problems [#permalink]
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whiplash2411 wrote:
Upon rearranging this you get:

$$x+y+z = 171-144 = 37$$which is option A the right answer.

Hope this helps some of you! Please post a reply if there's anything else you want to know about my explanation or anything else.

First off, great post, this really does help! My first instinct on how to handle this was definitely off.

Secondly, I believe the answer would actually be 27. 171-144=27... not 37. Not sure why I'm the only one that caught that, so my apologies if I'm doing something wrong.

BB, can you correct this in the Math Book Project?
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Re: How to draw a Venn Diagram for problems [#permalink]
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The answer is A, the mistake was in 47+52+82=181

181-144=37
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Re: How to draw a Venn Diagram for problems [#permalink]
Nice Explanation..

Now I got a better understanding regarding Venn Diagrams.
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Re: How to draw a Venn Diagram for problems [#permalink]
Thanks for that, whiplash. After a mechanical engineering degree, I can safely say that systems of equations with

# of equations >= # of variables

are our FRIENDS!!! YAY!
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Re: How to draw a Venn Diagram for problems [#permalink]
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Re: How to draw a Venn Diagram for problems [#permalink]
This formula, I assume could be substituted by this Venn Diagram method?

Overlapping Groups-
Total = Group 1 + Group 2 + Neither - Both

This is how I've been tackling these problems before but this seems to be an easier method?
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Re: How to draw a Venn Diagram for problems [#permalink]
Kudos!

Big thanks for this excellent problem solver, it comes as a big help for me.
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Re: How to draw a Venn Diagram for problems [#permalink]
Kudos! Just what I wanted.
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Re: How to draw a Venn Diagram for problems [#permalink]
Kudos! Great post whiplash2411, gonna help a lot during preparation. Added to the Quantitative strategies collection .
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Re: How to draw a Venn Diagram for problems [#permalink]
hello everyone,

I have recently joined the forum to pursue my dream to crack GMAT.
I am just beginners..just brushing my basics..
Kudos!!!!!!
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Re: How to draw a Venn Diagram for problems [#permalink]
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Bumping for review*.

*New project from GMAT Club!!! Check HERE

All Theory Topics: search.php?search_id=tag&tag_id=351
MATH BOOK: gmat-math-book-87417.html
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Re: How to draw a Venn Diagram for problems [#permalink]
Bunuel wrote:
Bumping for review*.

*New project from GMAT Club!!! Check HERE

All Theory Topics: search.php?search_id=tag&tag_id=351
MATH BOOK: gmat-math-book-87417.html

Hi, bunuel,

I was wondering if you could explain/add more color to the above explanation to reconcile with your original thread - formulae-for-3-overlapping-sets-69014.html#p729340 .

Your original thread contains two concepts one that includes "neither" where the data doesn't belong to any set in consideration. How would that be solved using the above explanation as given by whiplash? Thanks in advance for your help.

P.S - I have been reviewing both threads and just found the above explanation easier to understand than yours but it doesn't address "neither" as a concept and we know that there is no one better here to explain the concepts on this forum . Much appreciated!
Re: How to draw a Venn Diagram for problems [#permalink]
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