Multiple choice

Directions: Find the missing number in the following series: ?, 35, 91, 189, 341, 559

  1. 9

  2. 8

  3. 7

  4. 6

  5. None of these
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A Correct answer
AI explanation

The differences between the consecutive terms are 56, 98, 152, and 218, and their second differences are 42, 54, and 66. The third differences between these numbers are a constant 12. Working backward from 56 by subtracting 30 gives a first difference of 26, so the missing first term must be 35 - 26 = 9.

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