In a class of 30 students, John is ranked 12th from the top. What is his rank from the bottom?

B. 19TH

Alice is ranked 5th from the top and 26th from the bottom in a competition. How many participants are there in total?

C. 32

In a race of 50 runners, if Mark is 15th from the top, what is his position from the bottom?

B. 36TH

If Sarah is ranked 8th from the bottom and there are 25 participants, what is her rank from the top?

B. 18TH

Identify the odd pair of numbers from the following options.

C. (12, 18)