as a percent: Favorable Outcomes ÷ Possible Outcomes X 100

P (Straight Flush) = 1 (2H) ÷ 47 (cards left in the deck) X 100 = 2.13% (but win 50 times bet) ... 2.15% x 50 = 107.5%
P (any flush) = 9/47 x 100 = 19.15% (but win 5 times your bet) .... 19.15% X 5 = 97.5%
P (any straight) = 3/47 = 6.4% (only get back your bet) ... 6.4%

P (LOOSE YOUR BET) = 35/47 = 74.5%

If you play long enough, only one bet (based on pay-offs at this machine), is certain (over 100%) to see a profit.

To quote DH: "... You've gotta ask yourself one question. Do you feel lucky? Well do ya, p..k?"