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Earn +20 ptsQ: Why do people have birthdays?
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What is the probability of a set of 28 people having two sets of matched birthdays?
Prob(two sets of matched birthdays) = 1 - [Prob(No matched birthdays)] + [Prob(One set of matched birthdays)] = 0.63
How many birthdays in a year?
One! Why do people write such silly questions?
Can people have two birthdays?
No. You're only born 1 day, and can only have 1 birthday. Of course you can celebrate it on another day, and then call it 2 birthdays, but you can only have one real :)
Why is nov 5th many peoples birthday?
Because there is billions of people, and only 365 days for their birthdays to be spread over.
How many birthdays does April have?
about 1,000
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