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Railways PYQCBT 1 2016

RRB NTPC · Question 2

Find the value of '?', if the mean of the data set 18, 16, 22, 13 and ? is16. A. 9 B. 11 C. 10 D. 12

  1. D

  2. B

  3. A

  4. C

Show answer & explanation

Answer: (B) B

Explanation

A mean of 16 for 5 values means their total is 5 × 16 = 80. The given four add to 18 + 16 + 22 + 13 = 69, so the missing value = 80 − 69 = 11.