Multiple choice general knowledge math & puzzles

1, 3, 6, 11, 20, 37, ...

  1. 40

  2. 50

  3. 60

  4. 70

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern follows the rule: next term = (previous term * 2) + (n - 2), where n is the position of the previous term. For 37, (37 * 2) + (6 - 2) = 74 - 4 = 70. Alternatively, the differences between terms are 2, 3, 5, 9, 17, where the second-level differences are powers of 2 (1, 2, 4, 8, 16). Adding 33 to 37 gives 70.