Civil Service Exam Reviewer · Number Series · hard

What number(s) should complete the series: 2, 40, 4, 37, 8, 34, , ?

  1. 31, 16
  2. 12, 31
  3. 16, 32
  4. 16, 31

Answer

D. 16, 31

Solution

Odd positions multiply by 2 (2, 4, 8, …); even positions subtract 3 (40, 37, 34, …). Next: 16, 31.

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