Find the intersection of the three sets: a = {–4, 3, 10}, b = {3, 6, 10, 15}, c = {–4, 10, 20}. {–4, 10} {10} {–4, 3, 6, 10, 15, 20} {–4, 3, 10}

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row