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Ramanujan Magic Number Riddle

Ramanujan Magic Number Riddle Solution - 22 July

Ramanujan discovered 1729 as a magic number.

Why 1729 is a magic number ?

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Solution
They can be expressed as the sum of the cubes of two different sets of numbers.

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