Sic Bo is an ancient Chinese dice game that is played with three dice. There are many possibilities for betting on this game. Two of these are "big" and "small." When you bet "big," you win if the total points rolled equals 11, 12, 13, 14, 15, 16 or 17, except when three 4's or three 5's are rolled. When you bet "small," you win if the total points rolled equals 4, 5, 6, 7, 8, 9 or 10, except when three 2's or three 3's are rolled. Winners of "big" and "small" alike receive double the amount staked on the game. Calculate the house percentage for each of these betting formats.