Word.ws English Dictionary

birthday paradox

birthday paradox noun: the counterintuitive observation that a random group of people needs to have only 23 members before there is a 50% chance of two of them having the same birthday.

Noun

birthday paradox

  1. The counterintuitive observation that a random group of people needs to have only 23 members before there is a 50% chance of two of them having the same birthday.

Questions about birthday paradox

What does birthday paradox mean?
Birthday paradox means the counterintuitive observation that a random group of people needs to have only 23 members before there is a 50% chance of two of them having the same birthday.
What part of speech is birthday paradox?
Birthday paradox is a noun.

Words near birthday paradox in the dictionary

  1. birthday effect
  2. birthday girl
  3. birthday girls
  4. birthday noodle
  5. birthday noodles
  6. birthday paradox
  7. birthday parties
  8. birthday party
  9. birthday problem
  10. birthday suit
  11. birthday suited

Source and license

Adapted from Wiktionary: birthday paradox (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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