Mathematics
Senior High
這題要怎麼算🙏
必考
同 公平競賽的獎金分配
在兩方對賭的試驗中,「公平」就是兩方的期望值均為0。
甲、乙兩人分別擲三個硬幣,如果甲的正面個數多於乙則甲贏,乙要給甲x元;否
利就甲輸,甲要給乙 220元。若賭局公平,則x= 420
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