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14 Apr 2005, 06:50
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There is a club of car-owners consisting of 100 members.
93 persons own BMW
90 persons own Ferrari
81 persons own Porsche
75 persons own Aston Martin
62 persons own Lamborghini
How many people own all the cars?
93 persons own BMW
90 persons own Ferrari
81 persons own Porsche
75 persons own Aston Martin
62 persons own Lamborghini
How many people own all the cars?
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This discussion does not meet community quality standards. It has been retired.
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THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.
If you would like to discuss this question please re-post it in the respective forum. Thank you!
To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
14 Apr 2005, 13:54
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should be
D) 1
of 100
7 dont have a BMW
10 dont have a Ferrari
19 dont have a porsche
25 dont have an Aston Martin
38 dont have a Lamborghini
which sums 99
However, this reasoning is flawed. 1 is the least number, not the correct number. This way, we are supposing that people who do not own a car own the other 4 cars (Otherwise the number could also be 62, assuming that who does not own a Lamborghini does not own an Aston Martin or another case). In other words, we can be sure that, adding 7 who don't own a Bmw and 10 who do not own a Ferrari, we're not adding the same persons.
Please add your thoughts.
D) 1
of 100
7 dont have a BMW
10 dont have a Ferrari
19 dont have a porsche
25 dont have an Aston Martin
38 dont have a Lamborghini
which sums 99
However, this reasoning is flawed. 1 is the least number, not the correct number. This way, we are supposing that people who do not own a car own the other 4 cars (Otherwise the number could also be 62, assuming that who does not own a Lamborghini does not own an Aston Martin or another case). In other words, we can be sure that, adding 7 who don't own a Bmw and 10 who do not own a Ferrari, we're not adding the same persons.
Please add your thoughts.
