1. Five books P, Q, R, S, and T are placed on a shelf. S is to the left of Q and to the right of T. P is to the left of T. R is to the right of Q. What is the position of Q from the right end?

2. In a row of 40 students, Liam is 14th from the left end. What is his position from the right end if Olivia, who is 8th from the right end, is 5 places to the right of Liam?

3. Five friends P, Q, R, S, and T are sitting in a circle facing the center. T is to the immediate right of S. Q is between P and R. Who is sitting opposite to S?

4. In a row of children, Ravi is 7th from the left and 12th from the right. If two children leave the row from the right end, what will be Ravi's position from the right end?

5. Five books A, B, C, D, and E are placed on a shelf. C is to the right of A and to the left of E. B is to the right of E. D is to the left of A. What is the position of A from the left end?

6. Six friends A, B, C, D, E, and F are sitting in a circle facing the center. B is to the immediate right of A. D is between F and E. C is not next to A. Who is to the immediate left of F?

7. Five friends A, B, C, D, and E are sitting in a row. A is not at any end. B is to the right of E. C is to the left of D and right of A. Who is at the right end?

8. Six friends are sitting in a circle facing the center. A is between B and C. E is between D and F. D is to the immediate right of B. Who is between A and F?

9. In a class of 50 students, Sophia ranks 10th from the top. What is her rank from the bottom?

10. In a row of 15 people, A is 5th from the left and B is 7th from the right. How many people are there between A and B?