Beach Day by Rodger Bliss
December 2023
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Magic Number

Srinivasa Ramanujan FRS was an Indian mathematician and autodidact who, with almost no formal training in pure mathematics, made extraordinary contributions to mathematical analysis, number theory, infinite series, and continued fractions.

Indian math

Ramanujan discovered 1729 as a magic number. Why is 1729 is a magic number ?

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2 guesses to Magic Number


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  • anant

    1729 is the smallest number expressible as the sum of two cubes in two different ways –

    1^3 + 12^3 = 1729
    9^3 + 10^3 = 1729

  • Dude

    Absolutely correct, Anant.

    You are today’s winner.