Piyush ranked 24^th from the top and 55^th from the bottom in his class. How many students are there in his class?

Piyush's rank from the top =  24th

Piyush's rank from the bottom = 55th

Total number of students = 24 (from the top) + 55 (from the bottom) - 1

Total = 24 + 55 - 1 = 78