Multiple choice general knowledge math & puzzles 3,3,5 4,4,3 5,5,4 3,? 3 4 5 6 Reveal answer Fill a bubble to check yourself D Correct answer Explanation The sequence represents the number of letters in the English words for numbers: One(3), Two(3), Three(5); Four(4), Five(4), Six(3); Seven(5), Eight(5), Nine(4); Ten(3), Eleven(6). The next number is 6 because 'Eleven' has 6 letters.