Civil Service Exam Reviewer · Number Series · medium

What number(s) should complete the series: 1, 62, 10, 59, 19, 56, 28, ?

  1. 37
  2. 50
  3. 56
  4. 53

Answer

D. 53

Solution

Two alternating series: 1, 10, … (+9) and 62, 59, … (−3). The next term belongs to the second: 56 − 3 = 53.

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