Sigmund picked a pair of socks out of his drawer without looking in the drawer. Sigmund has 3 pairs of black dress socks, 4 pairs of brown dress socks, 3 pairs of black sport socks, and 5 pairs of white sport socks. What is the probability that Sigmund will select a pair of black socks or a pair of sport socks?
There are 8 girls and 12 boys in Miss Reading's homeroom. Five of the girls play sports and 3 do not play sports. Eight of the boys play sports and 4 do not play sports. If a student is selected at random, what is the probability that the student is a boy or plays sports? Express your answer as a fraction.
Jason asks each member of his class what type of phone they have. The class consists of 12 women and 8 men. 5 of the women said they had android-based phones and 4 of the men said they had android-based phones. What is the probability of randomly picking a student in the class that is a man or that does not own an android-based phone?