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Find the WRONG number in the series: 6, 10, 18, 36, 66, 130

Competition practiceNumber Series
  • A10
  • B18
  • C36
  • D66

Step-by-Step Solution

Added differences double: +4, +8, +16, +32, +64 giving 6, 10, 18, 34, 66, 130. So 36 should be 34 — 36 is wrong.
Answer: C) 36

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