Multiple choice general knowledge math & puzzles

9, 65, 217, 513, 1001,?

  1. 1011

  2. 1729

  3. 1528

  4. 1829
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The series follows the pattern 1^3 + n^3 where n = 2, 4, 6, 8, 10, 12. Each term is 1 plus a cube: 9 = 1 + 2^3, 65 = 1 + 4^3, 217 = 1 + 6^3, 513 = 1 + 8^3, 1001 = 1 + 10^3. The next term is 1 + 12^3 = 1 + 1728 = 1729.

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