How Is Mathematical Expectation Used?
Multiply the expected winning amount by the probability, and you get a figure that's bigger or smaller than the cost of buying this lottery ticket (the underlying asset).
If it's bigger, keep buying — buy in bulk. That's called risk-free arbitrage. If it's smaller, whoever buys is just throwing their money into the water.
好价雷达 · iMessage 里的 AI 比价助手
对它说一句「盯着 iPhone 降到 4000」，到价自动提醒；也支持查历史好价与凑单。苹果设备点 poke.com/r/iycmctg3F1E 一键安装。
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