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As you may know, the quadrennial World Cup was recently played in Brazil. As you may not know, each of the 32 teams in this year's tournament had 23 players on their roster. This week's Math Dude episode has absolutely nothing to do with soccer or the World Cup, so why have I mentioned this fun fact?

Allow me to answer this question with a question: What are the odds that two players from one World Cup team share a birthday? It seems like the chances are pretty slim. After all, there are 365 days in a year, and only 23 players on a team—so surely there's not much chance of a shared birthday, right? Believe it or not, wrong.

As we'll soon find out, there's actually a decent chance that many—perhaps even the majority—of World Cup teams will have a pair of players who share a birthday. How is that possible? Keep on reading to find out!

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