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.

Raman ranks sixteenth from the top and forty ninth from the bottom in a class. How many students are there in the class ?

A. 64
B. 65
C. 66
D. Cannot be determined
E. None of these
Answer: A . 64

Justification: Clearly, number of students in the class = (15 + 1 + 48) = 64