The #2 Most Common GMAT Math Word Problem - Overlapping Sets

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In this weeks video Erika, Magoosh's GMAT expert, will show you how to solve overlapping sets when they show up in GMAT math word problems.
00:00 - Erika introduces herself and the GMAT Math video
00:30 - Example GMAT problem
02:40 - Setting up a double matrix
04:37 - Solving with the double matrix
09:00 - Double matrix vs. venn diagram
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[@arindamsmith]

Great video and a nice problem. Your videos are always helpful

[@marcosahertian]

Thanks a lot Erika n magoosh

[@AbhiyanSingh]

Please share a video for 3 Venn diagrams. Also, kindly discuss two different types of formulae used to solve the 3 Venn diagram i.e. when we know the number of items in each circles and combined areas, and when we don't know the same.

[@MagooshGMAT]

Hi Abhiyan, 3 criteria venn diagrams are much rarer, but they use all the same concepts as normal 2 criteria venn diagrams. For more information, though, you'll want out check out this post that goes into more detail!
magoosh.com/gmat/gmat-sets-venn-diagrams/

[@bassamal-kaaki3253]

I dont find these questions after working on them hard, however organizing the information is the hardest part.

[@fullc0de]

Very helpful!

[@MagooshGMAT]

Thank you!

[@paulkonyefa1060]

So you can use a (3x3)/triple matrix instead of 3 Venn diagrams for 3 overlapping sets and so forward?

[@MagooshGMAT]

Check out minutes 9-10 in the video where Erika discusses this!

[@ashishsinha9035]

Gr8

[@UbaidKhan-dg8dp]

Hard to figure out what the 90% sentence means

[@MagooshGMAT]

The sentence tells us that 90% of the professors are academic or tenured or both. So, the question asks us to find what percent of the professors who are professional are tenured. Hope that helps!