Find the probability that if a person is selected from this group, they passed their first math course in college or they took math as a senior in HS. 
a) P(Passed or Senior)=P(Passed)+P(Took math as a senior)−P(Both) 
b) P(Passed or Senior)=P(Passed)+P(Took math as a senior) 
c) P(Passed or Senior)=P(Passed)−P(Took math as a senior) 
d) P(Passed or Senior)=P(Passed∩Took math as a senior)