Multiple choice general knowledge math & puzzles

Odd one out 213 111 121 222 333 201 303

  1. 303

  2. 213

  3. 201

  4. 121
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

121 is the odd one out because it's the only number in the sequence that uses two different digits (1 and 2), whereas all other numbers (213, 111, 222, 333, 201, 303) have repeated digits. 213 and 201 both have repeated 1s, while 111, 222, 333, and 303 are made of completely repeated digits.

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