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  2. Birthday problem - Wikipedia

    en.wikipedia.org/wiki/Birthday_problem

    The birthday paradox is a veridical ... without repetitions and order matters (e.g. for a group of 2 people, ... >50% probability of 3 people sharing a birthday ...

  3. List of paradoxes - Wikipedia

    en.wikipedia.org/wiki/List_of_paradoxes

    Birthday paradox: In a random group of only 23 people, there is a better than 50/50 chance two of them have the same birthday. Borel's paradox: Conditional probability density functions are not invariant under coordinate transformations. Boy or Girl paradox: A two-child family has at least one boy. What is the probability that it has a girl?

  4. Pigeonhole principle - Wikipedia

    en.wikipedia.org/wiki/Pigeonhole_principle

    The birthday problem asks, for a set of n randomly chosen people, what is the probability that some pair of them will have the same birthday? The problem itself is mainly concerned with counterintuitive probabilities, but we can also tell by the pigeonhole principle that among 367 people, there is at least one pair of people who share the same ...

  5. The Most Common Birthday Might Surprise You - AOL

    www.aol.com/most-common-birthday-might-surprise...

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  6. Birthday attack - Wikipedia

    en.wikipedia.org/wiki/Birthday_attack

    Comparison of the birthday problem (1) and birthday attack (2): In (1), collisions are found within one set, in this case, 3 out of 276 pairings of the 24 lunar astronauts. In (2), collisions are found between two sets, in this case, 1 out of 256 pairings of only the first bytes of SHA-256 hashes of 16 variants each of benign and malicious ...

  7. File:Birthday paradox probability.svg - Wikipedia

    en.wikipedia.org/wiki/File:Birthday_paradox...

    English: In probability theory, the 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 (since there are 366 possible birthdays, including February 29). However, 99% ...

  8. Wikipedia:Reference desk/Archives/Mathematics/2007 January 31 ...

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

    1.1 Alternative solution to Birthday Paradox. 4 comments. 1.2 math question. 6 comments. 1.3 Why solving problems like, "P versus NP" and others. 7 comments.

  9. Is it disrespectful to order fajitas at someone else’s ...

    www.aol.com/news/disrespectful-order-fajitas...

    One commenter wrote, “because why would you order that on my birthday, at my birthday dinner, while it’s my birthday party 🙄,” while another added, “The fajitas steal all the attention ...