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 This series repeats each number twice before subtracting 13: 53, 53, then 53-13=40, 40, then 40-13=27, 27. The next number after 27 is 27-13=14. Option A (12) would require subtracting 15, which doesn't match the established pattern.