Multiple choice

Directions: Choose the odd numeral pair/group in the following question.

  1. 13 : 21

  2. 19 : 27

  3. 15 : 23

  4. 16 : 23
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Looking at each pair: 13→21 (add 8), 19→27 (add 8), 15→23 (add 8), but 16→23 (add 7). The first three pairs all follow the pattern of adding 8, while the last pair (16:23) adds only 7, making it the odd one out.

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