Step 1 Given information Player 1 and Player 2 are both equally likely to choose rock paper or scissors in a rock paper scissor game Step 2 a Let a b represent the outcome of the game where a and b are the choices of player 1 and player 2 respectively Let R represent the rock S represents the scissor and P represent the paper The total of 9 possible outcomes of the game will be PossibleA outcomes R R R P R S P R P P P S S R S P S S Each outcome is equally likely to happen with a probability of The probability model will be a b P a b Step 3 b From the above table there are only 3 outcomes player 1 is winning that are R S P R and S P The probability that Player 1 wins the game on the first throw will be computed as Winning outcomes Total outcomes R R 1 9 P Player 1 R P 1 9 R S 19 P R 1 9 P P 1 9 3 0 33 So the probability that Player 1 wins the game on the first throw is 0 33 P S 9 S R 1 9 S P 19 S S 10 9