Multiple choice general knowledge math & puzzles 3, 6, 11, 18, ? 30 22 27 29 Reveal answer Fill a bubble to check yourself C Correct answer Explanation The differences between consecutive terms are consecutive odd numbers: 6-3=3, 11-6=5, 18-11=7. Following this pattern, the next difference should be 9, so 18+9=27. Option C is correct.