Let us toss up a coin to decide who is to begin the game.

我们掷硬币以决定谁先开始游戏。

youdao

You might say the probability that you toss a coin and it comes up heads is a half, because it's equally likely to be heads and tails.

你可以说概率是你投掷一个硬币，出现正面的机会是一半，因为出现正面和背面的机会是相等的。

youdao

Let's say we have a coin that we can toss and that it comes up heads or tails with equal probability.

比方说，我们有一个硬币，我们可以抛，它是头或尾巴等概率。

youdao

You might say the probability that you toss a coin and it comes up heads is a half, because it's equally likely to be heads and tails.

如果你抛一枚硬币,正面向上的概率一定是50%,因为正反哪一面向上的可能性是相同的

耶鲁公开课 - 金融市场课程节选