Problem K. 453. (February 2015)
K. 453. The mean mark on a test was 71 points. However, the teacher made a mistake in assessing one of the problems, so every student was given an extra point. Thus the total mark on the papers changed to 936. How many students took the test?
Deadline expired on March 10, 2015.
95 students sent a solution. 6 points: 92 students. 5 points: 1 student. Unfair, not evaluated: 2 solutions.