Posted by **lyn** on Sunday, January 27, 2013 at 2:56pm.

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows:

23 said they drove alone.

30 rode in a carpool.

31 rode public transportation.

4 used both carpools and public transportation.

3 used both a carpool and sometimes their own cars.

3 used buses as well as their own cars.

1 used all three methods.

How many used none of the above-mentioned means of transportation?

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