Civil Service Exam Reviewer · Number Series · hard

What number(s) should complete the series: 5, 8, 16, 19, 38, 41, ?

  1. 44
  2. 82
  3. 85
  4. 81

Answer

B. 82

Solution

Alternately add 3 and double: the next step is doubling, 41 × 2 = 82.

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