Mario and Nina each have a bag of marbles, each of which contains 18 blue marbles, 10 red marbles, and 12 white marbles. If Mario and Nina each select one marble from their respective bags, what is the probability that either Mario or Nina select a red marble?  Choose the correct choice from the following answers
A) 3/4  B) 2/4  C) 1/4  D) 1/8  E) 1/16
Mario and Nina each select one marble from their respective bags.   Probability that either Mario or Nina select a red marble = Probability that Mario selects a red marble + Probability that Nina selects a red marble   Probability that either Mario or Nina select a red marble = (10/40)*(10/40) + (10/40)*(10/40) = 2*(1/16)   Probability that either Mario or Nina select a red marble = 1/8   Answer would be 1/8.
<result>D</result>
Mario and Nina each have a bag of marbles, each of which contains 18 blue marbles, 10 red marbles, and 12 white marbles. If Mario and Nina each select one marble from their respective bags, what is the probability that either Mario or Nina select a red marble?