Multiple choice general knowledge math & puzzles 8 15 24 35 48 63 70 80 88 96 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The series follows the formula n^2 - 1 starting from n=3: 3^2-1=8, 4^2-1=15, 5^2-1=24, 6^2-1=35, 7^2-1=48, 8^2-1=63. The next term is 9^2-1=80. Alternatively, the differences are increasing odd numbers: 7, 9, 11, 13, 15, so 63+17=80.