Multiple choice general knowledge math & puzzles Look at this series: 7, 10, 8, 11, 9, 12, . . . What number should come next? 4 12 10 16 Reveal answer Fill a bubble to check yourself C Correct answer Explanation The series follows two alternating patterns: +3 and -2. (7+3=10, 10-2=8, 8+3=11, 11-2=9, 9+3=12). The next step is 12-2, which equals 10.