Jaikishan and Premkishan Solutions for Exercise 1: Let us Practice

In a row of boys, Rajan is ${10}^{th}$ from the right and Suraj is ${10}^{th}$ from the left. When Rajan and Suraj interchange their positions, Suraj will be ${27}^{th}$ from the left. Which of the following will be Rajan's position from the right?

In a queue, Mr. X is fourteenth from the front and Mr. Y is seventeenth from the end, while Mr. Z is exactly in between Mr. X and Mr. Y. If Mr. X is ahead of Mr. Y and there are $48$ persons in the queue, how many persons are there between Mr. X and Mr. Z?

In a vertical queue of $13$ people, all facing North, K stands exactly at the center of the queue. No one stands between K and W. Only five people stand between W and P. L stands at one of the positions before P, but not at the beginning of the queue. How many people stood after W?

Anil reached a place on Friday. He came to know that he was three days earlier than the scheduled day. If he had reached there on the following Sunday, how many days late/early he would have been?

In a class, Anil ranks $7^{th}$ from the top, Rohit is $7$ ranks ahead of Sumit and $3$ ranks behind Anil. Vijay, who is $4^{th}$ from the bottom is $32$ ranks behind Sumit. How many students are there in the class?

Aman is ${16}^{th}$ from the left end in a row of boys and Vivek is ${18}^{th}$ from the right end. Gagan is ${11}^{th}$ from Aman towards the right and $3^{rd}$ from Vivek towards the right end. How many boys are there in the row?

In a queue of $15$ people facing north, Rahul's position is $9^{th}$ from the end of the queue. Only $4$ people are standing between Rahul and Tom, Karan is standing immediately after Tom. Bharti is standing exactly between Karan and Rahul. Sonali is standing before Bharti, but after Tom. What is the position of Sonali from the beginning of the queue? (Note: All people are standing one behind the other)

The Chairman of the selection committee arrived at the interview-room for conducting an interview at $10 mins$ to $12:30 pm$. He was earlier by $20 mins$ than the other members of the board, who arrived late by $30 mins.$ At what time was the interview scheduled?