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Which number is the wrong term in the series 6, 11, 21, 36, 56, 82?

Competition practiceNumber Series
  • A56
  • B36
  • C21
  • D82

Step-by-Step Solution

Differences increase by 5 (5, 10, 15, 20, 25), giving 6, 11, 21, 36, 56, 81; so 82 should be 81.
Answer: D) 82

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