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Railways PYQCBT 1 2016

RRB NTPC · Question 83

Find the missing (?) in the series. 1, 1, 8, 4, 27, 9, ?, 16 ….

  1. 32
  2. 48
  3. 64
  4. 72
Show answer & explanation

Answer: (C) 64

Explanation

Two series alternate: cubes 1, 8, 27, 64 and squares 1, 4, 9, 16. The missing term is 4³ = 64.