Multiple choice general knowledge math & puzzles 0,2,6,12... 22 20 24 26 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The pattern is n^2-n where n starts from 1: 1^2-1=0, 2^2-2=2, 3^2-3=6, 4^2-4=12, so next is 5^2-5=20. Each term is a square minus the number itself.