So I have a problem that just went right over my head and only some people got it right. Can you figure it out? I sure can't. She said it wasn't graded, and we don't get anything for doing it, I just want to know. Here it is:

When Josh takes a survey of his 28 classmates, he gets the following results:

14 like English class.

19 like Science class.

16 like Math class.

13 like English and Science class.

7 like Science and Math class.

5 like Math and English class.

How many students like all English, Science, and Math class?

NolanKG
Oct 5, 2017