This is my second class in intro to probability at a university level. 1) There are 5 people in a room with 3 boys and 2 girls. If I randomly pick 1 person from the box, P(boy)=3/5. If I randomly pick 2 people, P(pick 2 girls) = 2/5 x 1/4 = 1/10. a) Now what is P(pick 1 girl and 1 boy) equal to if the order doesn't matter? b) What is P(pick 1 girl and 1 boy) equal to if the order does matter? ===================== 1a) My guess is that P(pick 1 girl and 1 boy) = 2/5 x 3/4 = 6/20 = 3/10 if the order doesn't matter. Is this right? 1b) No idea... ======================= 2) What is the difference between an "independent event" and a "mutually exclusive event"? I can't visualize the difference... Can someone help me please?