Multiple choice general knowledge math & puzzles

181-91-61-46-37-?

  1. 29

  2. 30

  3. 31

  4. 32
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pattern subtracts consecutive squares from odd numbers: 181-90=91 (90=9*10), 91-30=61 (30=5*6), 61-15=46 (15=4*5-5), 46-9=37 (9=3^2), 37-6=31 (6=2*3). The differences are products of consecutive integers.

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