Three children are selected, and their gender recorded. Assume that males and females are equally likely. List the simple events in the sample space. (Enter your answer as a comma-separated list. Enter each simple event in the format (G1, G2, G3) where Gi is the gender of the ith child. Use M for male and F for female.) Assign probabilities to the simple events. (Enter your probability as a fraction.) Each event is equally likely, with probability . What is the probability that there are two girls and one boy in the group? (Enter your probability as a fraction.)