Multiple choice general knowledge math & puzzles

3 8 18 33 _ 78

  1. 20

  2. 25

  3. 53

  4. 51
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The differences are 5, 10, 15... following a pattern of adding multiples of 5. The next difference is 20. 33 + 20 = 53. To verify, 53 + 25 = 78, which matches the final number in the series.

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