The birthday paradox shows that in a group of just 23 people, there's a 50% chance two share a birthday.
Fact #8546
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Volcanic eruptions can produce lightning within ash clouds.
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The Earth's mantle is composed of semi-solid rock.
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The fossil record is incomplete but still informative.
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Water expands when it freezes, which is why ice floats.
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Quantum particles can influence each other instantly across distance.
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