Civil Service Exam Reviewer · Number Series · hard

What number(s) should complete the series: 28, 65, 126, 217, 344, ?

  1. 514
  2. 471
  3. 511
  4. 513

Answer

D. 513

Solution

The terms follow n³ + 1 for n = 3, 4, …; for n = 8: 513.

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