In a room of just 23 people, there's a better than 50% chance two share a birthday

This is the birthday paradox. With 23 people there are 253 possible pairs, which brings the probability to about 50.7%.

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The source excerpt from Wikipedia explicitly states that in a group of 23 people, the probability that at least two share a birthday is about 50.7%, supporting the claim directly.

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The specialized Wikipedia article provides a detailed explanation and calculation confirming that with 23 people, there is a better than 50% chance that two share a birthday, consistent with the claim. No contradictory evidence was found.

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