The arithmetic mean of the scores of a group of students in a test was 52. The brightest of them secured a mean score of 80 and the dullest of a mean score of 31. The mean score of remaining is
A. approx.
B. approx.
C. approx.
D. approx.
Answer:C
The arithmetic mean of the scores of a group of students in a test was 52. The brightest of them secured a mean score of 80 and the dullest of a mean score of 31. The mean score of remaining is
A. approx. B. approx. C. approx. D. approx.