Multiple choice general knowledge math & puzzles 12,16,13,14,15,12,, Find out next two numbers in above series. 14, 14 18, 10 17, 11 16, 13 Reveal answer Fill a bubble to check yourself B Correct answer Explanation Two interleaved sequences: odd positions (1,3,5,7) are 12,13,15,18 with increments +1,+2,+3; even positions (2,4,6,8) are 16,14,12,10 decreasing by 2 each time.