Multiple choice general knowledge math & puzzles 1 6 3 8 5 10 _ 10 7 8 5 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The sequence alternates between adding 5 and subtracting 3: 1+5=6, 6-3=3, 3+5=8, 8-3=5, 5+5=10. The next step is 10-3=7.