A poll was taken of 100 students at a commuter campus to find out how they got
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A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows:
42 said they drove alone.
28 rode in a carpool.
31 rode public transportation.
9 used both carpools and public transportation.
10 used both a carpool and sometimes their own cars.
6 used public transportation as well as their own cars.
4 used all three methods.
How many used none of the above-mentioned means of transportation?
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