Describe the sample space for the indicated experiment.
2 boys and 2 girls are in a Room X and 1 boy and 3 girls in Room Y. Specify the sample space for the experiment in which a room is selected and then a person.
Let B1,B2 denote the boys and G1,G2 girls in room X and B3 denote the boy and G3,G4,G5 girls in room Y. Then
S={XB1,XB2,XG1,XG2,YB3,YG3,YG4,YG5}