In a class of 30 students, John is ranked 10th from the top. What is his rank from the bottom?

B. 21ST

In a race of 15 participants, Alice finishes 5th. If she swaps positions with the person who finishes 10th, what will be her new rank from the top?

C. 6TH

In a group of 25 people, Mark is ranked 15th from the bottom. What is his rank from the top?

A. 11TH

In a competition of 40 participants, Sarah is ranked 12th from the top. If she swaps places with the person ranked 29th, what will be her new rank from the bottom?

C. 28TH

In a quiz of 50 participants, Tom is ranked 25th from the top. If he is ranked 5th from the bottom, how many participants are there in total?

B. 50