A sample of 200 voters revealed the following votes concerning 3 candidate A B and C who are running for different offices,28 in favour of both A and B,98 in favour of A and B but not C,42 in favour of B not A or C,122 in favour of B and C not A,64 in favour of A and C but not B
How many if the voters win all the three candidates
what's the difference between
in favour of both A and B
and
in favour of A and B but not C
?