GMAT - Prep - Venn Diagram - IR : Integrated Reasoning (IR)
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# GMAT - Prep - Venn Diagram - IR

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GMAT - Prep - Venn Diagram - IR [#permalink]

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23 Aug 2013, 17:40
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Hi,
Can anyone walk me through with this IR? Can this be solved through Double Matrix Set.
Your help will be appreciated by Kudos.
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Veritas Prep GMAT Instructor
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Re: GMAT - Prep - Venn Diagram - IR [#permalink]

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26 Aug 2013, 20:49
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KUDOS
Expert's post
imhimanshu wrote:
Hi,
Can anyone walk me through with this IR? Can this be solved through Double Matrix Set.
Your help will be appreciated by Kudos.

Data obtained from the diagram:

Total students = 300
No of students of age 30 yrs or more = 110 + 50 = 160 (11 symbols in left circle + 5 in common area of the two circles)
No of students with no high school diploma = 40 + 50 = 90 (4 symbols in right circle + 5 in common area of the two circles)
No of students of age 30 yrs or more and no diploma = 50 (Common region of the two circles)
No of students of age 30 yrs or more with diploma = 110 (11 symbols in left circle)
No of students with no diploma but less than 30 yrs = 40 (4 symbols in right circle)

No of students less than 30 yrs = 300 - 160 = 140
No of students with a diploma = 300 - 90 = 210

No of students under 30 and with diploma = 100 (10 symbols outside the circles)

1.
No of students under 30 or with diploma = 140 + 210 - 100 = 250
Required probability = 250/300 = 5/6

2.
No of students under 30 and with diploma = 100
Required Probability = 100/300 = 1/3
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Get started with Veritas Prep GMAT On Demand for $199 Veritas Prep Reviews Veritas Prep GMAT Instructor Joined: 16 Oct 2010 Posts: 7125 Location: Pune, India Followers: 2137 Kudos [?]: 13688 [0], given: 222 Re: GMAT - Prep - Venn Diagram - IR [#permalink] ### Show Tags 26 Aug 2013, 20:52 imhimanshu wrote: Hi, Can anyone walk me through with this IR? Can this be solved through Double Matrix Set. Your help will be appreciated by Kudos. Also, you can use Double Matrix too. .............................With Diploma........No Diploma Under 30 yrs 30 yrs or more Total Fill in values from the diagram. _________________ Karishma Veritas Prep | GMAT Instructor My Blog Get started with Veritas Prep GMAT On Demand for$199

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Senior Manager
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Re: GMAT - Prep - Venn Diagram - IR [#permalink]

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30 Aug 2013, 05:20
VeritasPrepKarishma wrote:
No of students under 30 or with diploma = 140 + 210 - 100 = 250
Required probability = 250/300 = 5/6

Thanks Karishma for the detailed write up.
I'm through with the calculations, however, whats bothering me is the wording of Question A. How did you conclude that question A asks for No of Students under 30 or with diploma? whereas question says : Find number of students under 30 or high school diploma or both? Please enlighten me.

Thanks
H
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Re: GMAT - Prep - Venn Diagram - IR   [#permalink] 30 Aug 2013, 05:20
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# GMAT - Prep - Venn Diagram - IR

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