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Which number in the series 7, 9, 16, 25, 40, 66, 107 is wrong?

Competition practiceNumber Series
  • A66
  • B25
  • C16
  • D40

Step-by-Step Solution

Each term should be the sum of the previous two: 16 + 25 = 41, not 40, so 40 is wrong.
Answer: D) 40

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