Mathematics is not a boring subject. The majority of primary school students must master scientific learning methods and do more questions. The following is a must-win bet method for math games provided by the dictionary math network primary channel for everyone to use when reviewing! Cr Pati101! In a regional cross country race, only 4 horses compete. The rules for betting on horses set by the dealer are as follows: the odds of winning 5 to 2 means that for every $2 if the horse wins, the bettor wins $5 and can get back $2. How can you bet to win $10 no matter the outcome of the game? The answer is as follows: Answers and analysis require a wager of $95. The drawing method is as follows: Bet $35 on horse number 1, because the odds are 2 to 1, so if it wins, you will get $105. Bet $30 on horse number 2, because the odds are 5 to 2, so if it wins, you also get $105. Horse No. 3 and No. 4 bet $15 each because the odds are 6 to 1, so if either horse wins, you can get $105. Cr Pati101! So in the above betting method, no matter which horse wins, you can be sure to earn $10. In real life, the chances of earning and losing are rarely balanced, so you can first find the sum of the reciprocals of all earning odds plus 1 (if the earning odds are m versus n, then simplify (2+1)= 1/3; the odds of 5 to 2 are equal to 2.5 to 1, which is equal to 1/3.5=2/7; the odds of 6 to 1 is equal to 1/7, so the reciprocal sum of the odds is equal to the above formula as can be seen For every $19, you can make a net profit of $2, that is, bet $7 on No. 1 horse, $6 on No. 2 horse, and $3 on No. 3 horse and No. 4 horse each. I hope that the must-win betting method provided in math games can help you improve your math scores quickly!