A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows: 
38 said they drove alone.
37 rode in a carpool.
35 rode public transportation
6 used both carpools and public transportation
10 used both a carpool and sometimes their own cars
8 used buses as well as their own cars
5 used all three methods
How many used none of the above-mentioned means of transportation?
 used NONE of the 3 modes
You can do the check!! 
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