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One term in the series 2, 7, 22, 66, 202, 607, 1822 does not follow the rule. Which one is it?

Competition practiceNumber Series
  • A66
  • B22
  • C202
  • D607

Step-by-Step Solution

Rule: ×3 + 1. , not 66; then fits. So 66 is wrong.
Answer: A) 66

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