Multiple choice Find the 'missing' number in the following series. 4, 16, 8, 64, ?, 256 16 24 32 20 Reveal answer Fill a bubble to check yourself A Correct answer Explanation The series follows the pattern: n, n², 2n, (2n)², 4n, (4n)². Starting with 4: 4, 4²=16, 8, 8²=64, 16, 16²=256. The missing number is 16, which is 4×4.