Discussion Forum



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

1)

In a queue, Shikhar is ninth from the back. Arun's place is eighth from the front. Nikhil is standing between the two. What could u be the minimum number of boys standing in the queue?


A) 8

B) 10

C) 12

D) 14

Answer:

Option B

Explanation:

The maximum given rank for a boy from one side of the queue is 9. So, we first consider a queue of 9 boys.

1 2 3 4 5 6 7 8 9

S                 A   

But in this queue, there is even number of boys between Shikhar and Arun and as such, the middle position of Nikhil cannot be ascertained.

Now, consider an arrangement of 10 boys in a queue.

1 2 3 4 5 6 7 8 9 10

  S       N      A

Hence, required number of students = 10.