School
Within the BrainBashers school, the science department has three disciplines.
In total, 280 students study chemistry, 254 students study physics and 280 students study biology.
97 students study both chemistry and physics, 138 students study both physics and biology, 152 students study both chemistry and biology.
73 students study all three disciplines.
Can you determine how many students there are in the science department?
The answer is 500.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
n
u
m
b
e
r
o
f
s
t
u
d
e
n
t
s
=
1
0
4
+
7
9
+
7
3
+
2
4
+
6
3
+
6
5
+
9
2
=
5
0
0
