Civil Service Exam Reviewer · Number Series · medium

What number(s) should complete the series: 3, 9, 36, 108, 432, 1296, ?

  1. 5184
  2. 3888
  3. 1728
  4. 5185

Answer

A. 5184

Solution

Multiply alternately by 3 and 4: 1296 × 4 = 5184.

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