# Birthday problem

The probability that at least 2 people in a room of 30 share the same birthday the probability that at least 2 people in a room of 30 share the same birthday if you're seeing this message, it means we're having trouble. In probability theory, the birthday problem or birthday paradox concerns the probability that, in a set of n randomly chosen people, some pair of them will have the same birthday by the pigeonhole principle, the probability reaches 100% when the number of people reaches 367.

The birthday problem: a short lesson in probability, george reese a java applet that you can use to test different class sizes (it works better with small classes) and graphs of the probability for different numbers of people. Birthday problem consider the probability that no two people out of a group of will have matching birthdays out of equally possible birthdays start with an arbitrary person's birthday, then note that the probability that the second person's birthday is different is , that the third person's birthday is different from the first two is , and so on, up through the th person.

Happy birthday there's a birthday in your class today or will there be two how likely is it that two people in your class have the same birthday say your class has 28 students below is a simulation of the birthday problem it will generate a random list of birthdays time after time simulation.

The birthday paradox, also known as the birthday problem, states that in a random group of 23 people, there is about a 50 percent chance that two people have the same birthday is this really true. The commentator used the birthday paradox to explain away 2,700,000 of those matches — but that is incorrect unless you limit ‘same birthday’ to mean just the same day and month, and ignore the year of birth. The birthday problem (also called the birthday paradox) deals with the probability that in a set of \(n\) randomly selected people, at least two people share the same birthday though it is not technically a paradox, it is often referred to as such because the probability is counter-intuitively high.

## Birthday problem

Introduction the birthday problem is one of the most famous problems in combinatorial probability the classical statement of the problem is to find the probability that among n students in a classroom, at least two will have the same birthday the problem is famous, in part, because the answer is a bit surprising. The birthday problem is one of the most famous problems in combinatorial probability the classical statement of the problem is to find the probability that among n students in a classroom, at least two will have the same birthday the problem is famous, in part, because the answer is a bit surprising as in most mathematical problems,. The probability that at least 2 people in a room of 30 share the same birthday.

Birthday problem
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2018.