Here’s the question we saw at the end of today’s class. Can you find the answers?
There are 25 students in a tutor group. Within the group, there are 10 students taking HL Mathematics and 12 student taking HL Chemistry. In the group, there are 8 students who take neither HL Mathematics nor HL Chemistry.
What is the probability that a student selected at random from the tutor group is taking
a) both HL Mathematics and HL Chemistry?
b) either HL Mathematics or HL Chemistry?