Civil Service Exam Reviewer · Number Series · hard

What should complete the series: XLIX, XLIII, XXXVII, XXXI, ?

  1. XXIV
  2. XXVI
  3. XIX
  4. XXV

Answer

D. XXV

Solution

In Arabic numerals: 49, 43, 37, 31 (subtract 6). Next: 25 = XXV.

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