Multiple choice

Directions: Find the odd one.

3, 4, 9, 22.5, 67.5, 202.5, 810

  1. 4

  2. 9

  3. 22.5

  4. 67.5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pattern is +1 then ×(n/4) where n increases: 3(+1)→4(×2.25)→9(×2.5)→22.5(×3)→67.5(×3)→202.5(×4)→810. The number 3 breaks this pattern as it doesn't result from the same operation sequence - it's the starting seed. All other numbers follow the alternating +1 and multiply pattern.

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