eli5: how does probability works?

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In a game where a guy has a 20% win probabiliy in each round. What’s the probabiliy for him to win at least one time after six attempts? It can’t be 120%. I know there is a way to calculate this but idk.

In: Mathematics

7 Answers

Anonymous 0 Comments

The alternative to winning at least once is losing every round. The odds of that are (80%)^(6), or 26.2%. Subtract that from 100, and your odds of winning one or more rounds are 73.8%.

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