Multiple choice general knowledge IF 1 IS 2 AND 2 IS 1 THEN WAT IS 3 1 2 3 4 Reveal answer Fill a bubble to check yourself D Correct answer Explanation Following the pattern (1→2, 2→1), the rule alternates between adding 1 and subtracting 1. For odd numbers, add 1; for even numbers, subtract 1. Since 3 is odd, 3→4 (add 1).