Multiple choice general knowledge math & puzzles 3, 1, 2, 0, 1, -1, x 0 1 2 3 Reveal answer Fill a bubble to check yourself A Correct answer Explanation The pattern alternates between subtracting 2 and adding 1: 3-2=1, 1+1=2, 2-2=0, 0+1=1, 1-2=-1, so -1+1=0. The answer is 0.