It's quite simple, when there's a maximum currency total for each draw the odds can be distributed fairly. Although, you can increase the amount you bet to improve your odds of winning, this will result in a decreased profit.
Bet Odds Prize Profit฿0.025 1:10 ฿0.225 ฿0.200
฿0.075 3:10 ฿0.225 ฿0.150
฿0.125 5:10 ฿0.225 ฿0.100
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