Multiple choice general knowledge

A Sitter: What is Ramanujan Number?

  1. 1628

  2. 555

  3. 1729

  4. 1111
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

1729 is the Ramanujan-Hardy number, named after the famous anecdote where Hardy visited Ramanujan in hospital and mentioned arriving in taxi number 1729, which Ramanujan immediately recognized as the smallest number expressible as the sum of two positive cubes in two different ways: 1³ + 12³ = 9³ + 10³ = 1729.

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