The birthday problem

  1. Mario Cortina Borja1,†,
  2. John Haigh2

Article first published online: 30 AUG 2007

DOI: 10.1111/j.1740-9713.2007.00246.x

Issue

Significance

Significance

Volume 4, Issue 3, pages 124–127, September 2007

Additional Information

How to Cite

Borja, M. C. and Haigh, J. (2007), The birthday problem. Significance, 4: 124–127. doi: 10.1111/j.1740-9713.2007.00246.x

Author Information

  1. 1

    (m.cortina@ich.ucl.ac.uk) is Senior Lecturer in Statistics at the Institute of Child Health, University College London.

  2. 2

    (j.haigh@sussex.ac.uk) is Reader in Mathematics at Sussex University. John was born on December 31st, 1941, the same day as Sir Alex Ferguson.

  1. †

    Mario shares his birthday, April 19th, with tennis star Maria Sharapova, and with Richard von Mises (1883-1953), the pioneering statistician who first stated and solved the birthday problem.

  • †

    Mario shares his birthday, April 19th, with tennis star Maria Sharapova, and with Richard von Mises (1883-1953), the pioneering statistician who first stated and solved the birthday problem.

Publication History

  1. Issue published online: 30 AUG 2007
  2. Article first published online: 30 AUG 2007

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Happy Birthday! If it is not your birthday today, it may well be the birthday of someone in your office, or in your class at school. Possibly, it is the birthday of two people in your office or your class. Just how big does a group have to be before its members are likely to share a birthday?Mario Cortina Borja and John Haigh explain the birthday problem.

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