Multiple choice general knowledge 1,9,25,49,X,121 64 81 91 100 Reveal answer Fill a bubble to check yourself B Correct answer Explanation This sequence follows the pattern of consecutive odd squares: 1^2 = 1, 3^2 = 9, 5^2 = 25, 7^2 = 49, 9^2 = 81 (which is X), 11^2 = 121. Each term is the square of consecutive odd numbers starting from 1.