4 ms·

It's a nice little puzzle to prove that: Irrational number <=> Never repeating infinite decimal representation.

• Koshkin 8y ago
  > Never repeating Meaning "non-periodic." Repetitions can occur as many times as one wishes, e.g. 0.1230123001230001230000123... is irrational.
• QML 8y ago
  A more interesting puzzle is to prove or disprove whether every algebraic, irrational number is normal (in some base).