Civil Service Exam Reviewer · Number Series · hard

What number(s) should complete the series: 3, 6, 18, 108, 1944, ?

  1. 2,052
  2. 3,888
  3. 209,952
  4. 211,896

Answer

C. 209,952

Solution

Each term is the product of the two before it: 108 × 1944 = 209,952.

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