Multiple choice general knowledge math & puzzles 1,2,6,24,120 600 1440 360 720 Reveal answer Fill a bubble to check yourself D Correct answer Explanation This is a factorial series: 1! = 1, 2! = 2, 3! = 6, 4! = 24, 5! = 120. The next term is 6! = 120 * 6 = 720.