Multiple choice general knowledge math & puzzles 3, 5, 7, 12, 17, 19 19 17 12 13 Reveal answer Fill a bubble to check yourself D Correct answer Explanation The sequence contains consecutive odd numbers. The pattern should be 3, 5, 7, 9, 11, 13, 15, 17, 19. The number 12 is even and breaks this pattern of odd numbers.