The marks obtained in the previous class test out of 20 were as follows:

Question

19 10 9 8 14 11
11 11 12 11 9 12
19 19 17 10 13 8
18 16 17 5 14 16
4 12 10 7 18 15

What is the number of classes?

Answer 1

There are a total of 25 marks in the list of marks given above, so it can be assumed that each mark represents a class test. Therefore, the number of classes is 25.