Civil Service Exam Reviewer · Number Series · hard

What number(s) should complete the series: 4, 22, 12, 19, 36, 16, , ?

  1. 13, 108
  2. 108, 13
  3. 48, 13
  4. 108, 14

Answer

B. 108, 13

Solution

Odd positions multiply by 3 (4, 12, 36, …); even positions subtract 3 (22, 19, 16, …). Next: 108, 13.

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