RRB NTPC CBT 2 Level 6 Exam 9 May 2022 Shift 1

Question : 110 of 120

Marks: +1, -0

The mean of the observations 29, 36, 21, 18, 7, 19, k, k is 21.25 and the mode of the observations 29, 22, 15, 15, 22, 18, 21, p, p is 29. Find the value of (p - k ).