Birthday Probability

#math#probability#expert#counterintuitive

expertadults

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How many people do you need in a room before there's a 50% chance two of them share a birthday?

More Math & Numbers Riddles

I have as many brothers as sisters. But each of my sisters has twice as many brothers as sisters. How many boys and girls are in my family?

Using six 9s and any math operations (+, -, ×, ÷, parentheses), make 100.

How many seconds are in a year? (No calculator!)