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Math problem: 1 bet with 2. 1 says there are three identical gold coins. If you throw it all upside down, you can give it to me 10 yuan.
1 and 2 bets. 1 says there are three identical gold coins. If you throw them all away, heads up, you give me 10 yuan, heads down, I give you 10 yuan. Q: 1 and 2 who won?

The probability of all up and all down is equal, therefore, 1 and 2 are finally tied and there is no winner.