Question

There were 28 students in the RSM Math Challenge class. Over the year, eight students were late to class 12 times, 9 students were late 10 times, and the rest of the students were late

heeeeeeeelp

Answer 1

3 students

Explanation:

Now for RSM Olympiad are 8 math kangaroo are 7 studs that did both are 4

Total number of studs that participated are

(8-4) + 4 + (7-4)

4+4+3=11

those who didn't participate are

11-14-13