Position from Left/Right — Prelims Questions

In a row of 60 students, A is 25th from the left end. B is 20th from the right end. How many students are between A and B?

In a row, P is 15th from the left. Q is 18th from the right. If they interchange their positions, P becomes 25th from the left. What is Q's new position from the right?

In a row of boys facing South, A is 12th from the left end and B is 18th from the right end. C is 4th to the right of A. What is C's position from the right end of the row?

In a queue, there are 10 people in front of Ram and 15 people behind Shyam. If there are 5 people between Ram and Shyam, what is the minimum number of people in the queue?

In a row of students, P is 10th from the left and Q is 12th from the right. If there are 4 students between P and Q, what is the total number of students in the row?