0.8 odds! ! ! ! , if you bet 10u each time, and win 6 times out of 10 times, you will have invested 100u in total for 10 times, and you will win 18×6=108 and earn 8 yuan. If you win 5 times, 18×5=90 and lose 10 yuan. If you win 4 times, 18×4=72 and lose 28 yuan.