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Railways PYQCBT 1 2016

RRB NTPC · Question 85

4 out of 5 cricketers have played 13, 9, 5, 11 innings respectively. If the mean of the data set is 9, then the number of innings played by the 5th player is A. 9 B. 8 C. 7 D. 6

  1. C

  2. D

  3. B

  4. A

Show answer & explanation

Answer: (A) C

Explanation

The mean of 5 players is 9, so the total is 45. The four known values add to 13 + 9 + 5 + 11 = 38, so the fifth played 45 − 38 = 7 innings.