In Ranking Sequence questions, ranks of a person both from the top and bottom are mentioned and total number of persons is asked. However, sometimes this question is put in the form of a puzzle of interchanging seats by two persons.

Sanjeev ranks seventh from the top and twenty eight from the bottom in a class. How many students are there in the class ?

A. 37
B. 36
C. 35
D. 34
Answer: D . 34

Justification: Clearly, number of students in the class = (6 + 1 + 27) = 34.