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Railways PYQCBT 1 2016

RRB NTPC · Question 53

What will be the next number in the following series? 3, 4, 9, 16, 27, 64, 81, ...... A. 243 B. 256 C. 324 D. 356

  1. B

  2. D

  3. A

  4. C

Show answer & explanation

Answer: (A) B

Explanation

The series alternates powers of 3 and 4: 3, 4, 9 (3²), 16 (4²), 27 (3³), 64 (4³), 81 (3⁴), so next is 4⁴ = 256.