I suck at probability. I can't think of ways of understanding any problems that involve probability. Here's the problem I'm currently stuck on: So the first thing I did was make it a little easier for me to understand by rewriting the table in terms of frequency: Code (Text): WING SIZE EYE COLOR Normal Miniature Normal 4/15 1/50 Vermillion 1/100 151/300 Now I've thought of a method for going about solving the problem but it doesn't work. Isn't it correct that P(A or B) = P(A) + P(B)??? So I figured that the answer would be P(VermillionEyes or MiniatureWings or Both) = P(VermillionEyes) + P(MiniatureWings) + P(Both). That would be 154/300 + 157/300 + 151/300. BUT THIS IS OBVIOUSLY WRONG SINCE IT GOES PAST 300/300! How do I do this? Why is the P(A or B) = P(A) + P(B) thing not working?