TED-Ed: Check your intuition: The birthday problem - David Knuffke

The video explores the birthday problem, which shows that in a group of 23 people, there's a 50.73% chance that two people share the same birthday. This counterintuitive result is explained using combinatorics, focusing on calculating the probability of no shared birthdays and then subtracting from 100%. The video highlights the rapid growth of possible pairs as group size increases, making shared birthdays more likely. It concludes with real-world examples, illustrating how math can reveal unexpected probabilities.

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