I was playing dice at a bar tonight, and after a while one of the guys I was playing asks "What do you think are the odds against rolling all the place numbers (4, 5, 6, 8, 9, 10) before rolling a seven?" So I'm thinking, just rolling a 4 before a 7 is a 2-to-1 shot, so rolling all six numbers first has to be something like a 50-to-1 shot. Well, this guy says I don't have a clue about figuring odds, and we go back and forth about it a little bit, and pretty soon I end up agreeing to lay 40-to-1 against on this very proposition. We were betting a buck a turn, and after about three hours I'm stuck $200. I guess my figuring was off, but by how much? How do you figure the correct odds?