500
A survey of 80 sophomores at a certain western college showed the following: 36 take English, 32 take political science, 16 take political science and history, 6 take all three classes, 32 take history, 16 take history and English, and 14 take political science and English.
How many students:
a) take only English?
b) take none of these 3 courses?
c) take only history?
d) take political science and history?
e) do not take political science?
What is...
a) 12
b) 20
c) 6
d) 10
e)48