L=loss, W=win
The sample space is the set of all possible outcomes, so the set of all possible scenarios in the experiment.
what may happen is the following:
W, W, W
(win, win, win, then stop because the player wont play more than 3 games)
W, W, L
W, L
(loses the second game and stops)
L
(loses the first game and stops)
Answer: {WWW, WWL, WL, L}