In a class, among the students who passed the exam, A is 17th from the top and 22nd from the bottom. If 7 students failed the exam, what is the total number of students in the class?

In a class of 58 students, Tanvi secured the 26th rank from the top. Anaya's rank is one position lower (worse) than Tanvi's rank. Find the number of students who secured a lower rank than Anaya.

Mr. Kell ranked 155th from the bottom and 37th from the top in his class. How many students are there in his class?