Prasad ranked eleventh from the top and twenty fourth from the bottom among those who had passed in the mid-term examination in a class. If four students had failed in the mid-term examination, what was the total number of students in that class?​​

Given: 

Prasad ranked eleventh from the top and twenty fourth from the bottom among those who had passed in the mid-term examination in a class.

If four students had failed in the mid-term examination.

Solution:

Prasad is 11th from the top, so there are 10 students ahead of him.

He is 24th from the bottom, so there are 23 students behind him.

Total passed students = 10 (above) + 1 (Prasad) + 23 (below) = 34.

We are told that 4 students failed the exam.

Total students in the class:

Total students=Passed students + Failed students

= 34 + 4

= 38

The total number of students in that class is 38.

Thus, correct option is (d).