Civil Service Exam Reviewer · Number Series · medium

What number(s) should complete the series: 4, 8, 24, 48, 144, 288, ?

  1. 576
  2. 432
  3. 864
  4. 865

Answer

C. 864

Solution

Multiply alternately by 2 and 3: 288 × 3 = 864.

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