Some students are standing in a circle in which 6th and the 16th student are standing opposite to each other. find how many students were present there.	Select
A) 10
B) 15
C) 20
D) 25
E) 30

Rationale: ( n / 2 ) - x = 6 n - x = 16 solving these two = > n = number of students = 20 answer : c
Answer: C