Rock, paper scissors is a well known game in the United States. Two players count 1, 2, 3, then each throw down one hand as a rock (closed fist), paper (all fingers out), or scissors (two fingers out).
The winner is as follows:
Paper beats rock. (Paper covers rock) Scissors beats paper. (Scissors cuts paper) Rock beats scissors. (Rock crushes scissors)
If the two are the same it is a tie.
Her is the decision table :
Rock, Paper, Scissors: Decision table