Multiple choice The missing term in the series 1, 8, 9, 64, 25, 216, (?), 512 is: 343 49 81 125 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The series alternates between squares and cubes of consecutive integers: 1=1², 8=2³, 9=3², 64=4³, 25=5², 216=6³, ___=7²=49, 512=8³. The missing term is 7² = 49. Option B is correct.