Q. Of 30 applicants for a job , 14 at least 4 years' experience ;18 had degrees and 3 had less than 4 years' experience and don't have a degree. How many of the applicants had at least 4 years' experience and a degree ?
A.14;
B.13
C.9 ;
D.7 ;
E.5
Set problem
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There's a very thorough discussion (with several different approaches) of that question here: https://www.beatthegmat.com/job-applican ... 74450.html
Cheers,
Brent
Cheers,
Brent
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Hi Joy Shaha,
There are a number of different ways to approach this question. Here's one that uses the Tic-Tac-Toe board.
The initial 3x3 grid contains the information given by the prompt.
The second 3x3 grid contains the first set of deductions (the sub-totals, in blue), followed by the sub-groups (in green).
The answer to the question is in the upper-left corner: E
GMAT assassins aren't born, they're made,
Rich
There are a number of different ways to approach this question. Here's one that uses the Tic-Tac-Toe board.
The initial 3x3 grid contains the information given by the prompt.
The second 3x3 grid contains the first set of deductions (the sub-totals, in blue), followed by the sub-groups (in green).
The answer to the question is in the upper-left corner: E
GMAT assassins aren't born, they're made,
Rich
Last edited by [email protected] on Wed Jan 11, 2017 11:11 am, edited 1 time in total.
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[email protected] wrote:Hi Joy Shaha,
There are a number of different ways to approach this question. Here's one that uses the Tic-Tac-Toe board.
The initial 3x3 grid contains the information given by the prompt.
The second 3x3 grid contains the first set of deductions (the sub-totals, in blue), followed by the sub-groups (in green).
The answer to the question is in the upper-left corner: A
GMAT assassins aren't born, they're made,
Rich
The answer is in fact not A. It is E
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Hi regor60,
Thanks for catching the typo. I've amended the post.
GMAT assassins aren't born, they're made,
Rich
Thanks for catching the typo. I've amended the post.
GMAT assassins aren't born, they're made,
Rich
GMAT/MBA Expert
- Brent@GMATPrepNow
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I thought I'd point out that Rich's "Tic-Tac-Toe" approach goes by many names, including the Double Matrix Method. This technique can be used for most questions featuring a population in which each member has two characteristics associated with it.
Here, we have a population of applicants , and the two characteristics are:
- least 4 years of experience or not least 4 years of experience
- has degree or doesn't have a degree
This question type is VERY COMMON on the GMAT, so be sure to master the technique.
To learn more about the Double Matrix Method, watch this video: https://www.gmatprepnow.com/module/gmat- ... ems?id=919
Once you're familiar with this technique, you can attempt these additional practice questions:
Easy Problem Solving questions
- https://www.beatthegmat.com/finance-majo ... 67425.html
Medium Problem Solving questions
- https://www.gmatprepnow.com/module/gmat- ... /video/920
- https://www.beatthegmat.com/posted-speed ... 72374.html
- https://www.beatthegmat.com/motel-t271938.html
- https://www.beatthegmat.com/of-the-appli ... 70255.html
- https://www.beatthegmat.com/opening-nigh ... 64869.html
- https://www.beatthegmat.com/at-least-100 ... 74669.html
- https://www.beatthegmat.com/prblem-solving-t279424.html
Difficult Problem Solving questions
- https://www.gmatprepnow.com/module/gmat- ... /video/946
- https://www.beatthegmat.com/ratio-problem-t268339.html
- https://www.beatthegmat.com/overlapping- ... 65223.html
- https://www.beatthegmat.com/fractions-t264254.html
- https://www.beatthegmat.com/overlapping- ... 64092.html
- https://www.beatthegmat.com/mba/2011/05/ ... question-2
Easy Data Sufficiency questions
- https://www.gmatprepnow.com/module/gmat- ... /video/943
- https://www.beatthegmat.com/for-what-per ... 70596.html
- https://www.beatthegmat.com/ds-quest-t187706.html
Medium Data Sufficiency questions
- https://www.beatthegmat.com/sets-matrix-ds-t271914.html
- https://www.beatthegmat.com/each-of-peop ... 71375.html
- https://www.beatthegmat.com/a-manufacturer-t270331.html
- https://www.beatthegmat.com/in-costume-f ... 69355.html
- https://www.beatthegmat.com/mba/2011/05/ ... question-1
Difficult Data Sufficiency questions
- https://youtu.be/dsCeqF9Kbk8
- https://www.beatthegmat.com/double-set-m ... 71423.html
- https://youtu.be/dOZ9KM1m5Hs
- https://www.beatthegmat.com/sets-t269449.html
- https://www.beatthegmat.com/mba/2011/05/ ... question-3
Cheers,
Brent
Here, we have a population of applicants , and the two characteristics are:
- least 4 years of experience or not least 4 years of experience
- has degree or doesn't have a degree
This question type is VERY COMMON on the GMAT, so be sure to master the technique.
To learn more about the Double Matrix Method, watch this video: https://www.gmatprepnow.com/module/gmat- ... ems?id=919
Once you're familiar with this technique, you can attempt these additional practice questions:
Easy Problem Solving questions
- https://www.beatthegmat.com/finance-majo ... 67425.html
Medium Problem Solving questions
- https://www.gmatprepnow.com/module/gmat- ... /video/920
- https://www.beatthegmat.com/posted-speed ... 72374.html
- https://www.beatthegmat.com/motel-t271938.html
- https://www.beatthegmat.com/of-the-appli ... 70255.html
- https://www.beatthegmat.com/opening-nigh ... 64869.html
- https://www.beatthegmat.com/at-least-100 ... 74669.html
- https://www.beatthegmat.com/prblem-solving-t279424.html
Difficult Problem Solving questions
- https://www.gmatprepnow.com/module/gmat- ... /video/946
- https://www.beatthegmat.com/ratio-problem-t268339.html
- https://www.beatthegmat.com/overlapping- ... 65223.html
- https://www.beatthegmat.com/fractions-t264254.html
- https://www.beatthegmat.com/overlapping- ... 64092.html
- https://www.beatthegmat.com/mba/2011/05/ ... question-2
Easy Data Sufficiency questions
- https://www.gmatprepnow.com/module/gmat- ... /video/943
- https://www.beatthegmat.com/for-what-per ... 70596.html
- https://www.beatthegmat.com/ds-quest-t187706.html
Medium Data Sufficiency questions
- https://www.beatthegmat.com/sets-matrix-ds-t271914.html
- https://www.beatthegmat.com/each-of-peop ... 71375.html
- https://www.beatthegmat.com/a-manufacturer-t270331.html
- https://www.beatthegmat.com/in-costume-f ... 69355.html
- https://www.beatthegmat.com/mba/2011/05/ ... question-1
Difficult Data Sufficiency questions
- https://youtu.be/dsCeqF9Kbk8
- https://www.beatthegmat.com/double-set-m ... 71423.html
- https://youtu.be/dOZ9KM1m5Hs
- https://www.beatthegmat.com/sets-t269449.html
- https://www.beatthegmat.com/mba/2011/05/ ... question-3
Cheers,
Brent
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You can also always turn to algebra:
Total = 30
4+ years = 14
Degrees = 18
Neither = 3
Total - Neither = (4+ Years) + (Degrees) - Both
30 - 3 = 14 + 18 - Both
Both = 5
Total = 30
4+ years = 14
Degrees = 18
Neither = 3
Total - Neither = (4+ Years) + (Degrees) - Both
30 - 3 = 14 + 18 - Both
Both = 5
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We can use the equation:Joy Shaha wrote:Q. Of 30 applicants for a job , 14 at least 4 years' experience ;18 had degrees and 3 had less than 4 years' experience and don't have a degree. How many of the applicants had at least 4 years' experience and a degree ?
A.14;
B.13
C.9 ;
D.7 ;
E.5
Total = At least 4 years of experience + Degrees - Both + Neither
30 = 14 + 18 - B + 3
30 = 35 - B
B = 5
Answer: E
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