In a class of 30 students, A is ranked 10th from the top. What is A's rank from the bottom?

B. 21ST

B is ranked 5th from the bottom in a group of 25 people. What is B's rank from the top?

C. 19TH

In a race of 15 participants, C finishes 7th. If D finishes just before C, what is D's rank from the bottom?

B. 9TH

E is ranked 12th from the top and 9th from the bottom in a competition. How many participants are there in total?

B. 21

In a class of 30 students, A is ranked 12th from the top. What is A's rank from the bottom?

B. 19TH