If you play 9 times in rock, paper, siccors, how many times would you expect to win? *
2 answers
This gives {PPP, PPS, PPR, PSP, PSS, PSR, PRP, PRS, PRR}. By replacing player 1’s choice with scissors, then rock, the list of 9 outcomes becomes a complete list of 9 x 3 = 27 outcomes.
rock breaks scissors ... scissors cut paper ... paper covers rock
... or both show the same symbol ... tie
three equally likely outcomes ... win , lose , draw
you would expect to win 1/3 of the time
... or both show the same symbol ... tie
three equally likely outcomes ... win , lose , draw
you would expect to win 1/3 of the time