At a certain college no student is allowed
more than two majors. How many students are in the college if there are:
70 math majors
160 chemistry majors
230 biology majors
56 geology majors
24 physics majors
35 anthropology majors
12 double math-physics majors
10 double math-chemistry majors
4 double biology-math majors
53 double biology-chemistry majors
5 double biology-anthropology majors
and no other double majors?

Question

anonymous · Answer

Add the single majors, subtract the double majors.

anonymous · Answer

I get about 491.  Viper, I don't think your method will work.

anonymous · Answer

how sure is "about"

foolaroundmath · Answer

491 is correct.