Efron's dice

proper noun

A set of four intransitive dice with faces numbered as follows: A: 4, 4, 4, 4, 0, 0; B: 3, 3, 3, 3, 3, 3; C: 6, 6, 2, 2, 2, 2; and D: 5, 5, 5, 1, 1, 1. They have unusual statistical properties.

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Meanings

proper noun
  1. mathematicsA set of four intransitive dice with faces numbered as follows: A: 4, 4, 4, 4, 0, 0; B: 3, 3, 3, 3, 3, 3; C: 6, 6, 2, 2, 2, 2; and D: 5, 5, 5, 1, 1, 1. They have unusual statistical properties.

Origin

Invented by Bradley Efron.

Full word history & related roots →
Cite this entry
APA

Efron's dice. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Efron's%20dice

MLA

“Efron's dice.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Efron's%20dice. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Efron's dice,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Efron's%20dice.

Source: Efron's dice on Wiktionary, CC BY-SA 4.0.