An anonymous survey of college students was taken to determine behaviors regarding alcohol, cigarettes, and illegal drugs. The results were as follows: 825 drank alcohol regularly, 631 smoked cigarettes, 198 used illegal drugs, 394 drank alcohol regularly and smoked cigarettes, 105 drank alcohol regularly and used illegal drugs, 117 smoked cigarettes and used illegal drugs, 90 engaged in all three behaviors, and 322 engaged in none of these behaviors.

Question

anonymous · Answer

What's the problem?

anonymous · Answer

Seems like DEA should visit that college

anonymous · Answer

@jayy2014 I don't get it because you have to figure out the following:

anonymous · Answer

let me suggest you to use the attached diagram

goformit100 · Answer

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