Multiple choice general knowledge math & puzzles Which number should come next in this series? 10, 17, 26, 37, ? 46 52 50 56 Reveal answer Fill a bubble to check yourself C Correct answer Explanation The differences between consecutive numbers increase by 2: 17-10=7, 26-17=9, 37-26=11. The next difference should be 13, so 37+13=50. This is an arithmetic series with increasing differences.