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Railways PYQCBT 1 2020

RRB NTPC · Question 88

Select the numbers from among the given options that can replace the question mark (?) in the following series. 4, 11, 30, 67, 128, ?

  1. 346

  2. 195

  3. 182

  4. 219

Show answer & explanation

Answer: (D) 219

Explanation

Each term is n³ + 3: 1 + 3 = 4, 8 + 3 = 11, 27 + 3 = 30, 64 + 3 = 67, 125 + 3 = 128. Next: 216 + 3 = 219.