Liam makes four small investments. He earns 2000, 4000, and 3000 dollars on three, but loses 1000 dollars on a fourth and is very upset. What were his
average earnings for the four investments?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.