Multiple choice general knowledge math & puzzles Look at this series: 53, 53, 40, 40, 27, 27, ... What number should come next? 12 14 27 53 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The pattern is: repeat number twice, then subtract 13. 53, 53, (53-13=)40, 40, (40-13=)27, 27, (27-13=)14. After 27, 27 comes 14. Option B is correct.