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What number should replace the question mark in the series?
7, 10, 15, 22, 31, ?

Competition practiceAlphanumeric / Series
  • A42
  • B40
  • C41
  • D43

Step-by-Step Solution

The differences are 3, 5, 7, 9, so the next is 11: 31 + 11 = 42. (Terms are )
Answer: A) 42

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