Math Trivia and Answers

Medium

What number comes next: 1, 11, 21, 1211, 111221, ...?

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Answer: 312211
More information: John Conway's "look and say" sequence has no digits other than 1, 2, and 3 in it, unless the seed number contains such a digit or a run of more than three of the same digit. A degenerate sequence appears with the seed of 22.

Medium

What is Bertrand Russell's Erdős number?

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Answer: 3
More information: Russell collaborated very little and no Erdös number can be found using research articles. But, as pointed out by Sachi Sri Kantha at "the Erdös number project" Russell and Albert Einstein did coauthor the Russell-Einstein "Peace" Manifesto of 1955.



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