Question 198504
First, draw a big circle that represents ALL the
people interviewed. Inside that cirle are two
smaller circles which have an overlap.
The smaller circles are:
(1) Everyone with brown eyes
(2) Everyone with blonde hair
The overlap is everyone with brown eyes and blonde hair
If I add (1) and (2), I get
{{{35 + 24 = 59}}}, but by doing this, I have added the 
intersection between them twice, so I'll subtract it once.
14 people had both brown eyes and blonde hair, so
{{{35 + 24 - 14 = 45}}}
The people who had neither are all who are outside these
2 circles, but inside the bigger circle surrounding them.
There are {{{27}}} of them
All the people interviewed = {{{45 + 27 = 72}}} answer