Answer:
59 students
Explanation:
3s+2
5, 8, 11, 14, 17, 20, 23, 26, 29, 32, 35, 38, 41, 44, 47, 50, 53, 56, 59
4s+3
7, 11, 15, 19, 23, 27, 31, 35, 39, 43, 47, 51, 55, 59
5s+4
9, 14, 19, 24, 29, 34, 39, 44, 49, 54, 59
6s+5
11, 17, 23, 29, 35, 41, 47, 53, 59
The smallest number of students there could have been is 59.