b) In a survey of 900 students in a school, it was found that 600 students liked tea, 500 liked coffee and 125 did not like both
1 answer:
You might be interested in
A) Suppose 
is the set of juniors and 
is the set of social science majors. There are 35 students in all, but 12 of them don't belong to either set, so 
. Then
So the probability that a random student is both a junior and social science major is
b) We're looking for the probability
. By definition, this would be
So the probability that a random student is both a junior and social science major is
b) We're looking for the probability