What letter comes next in the series: A, E, I, M, ?

A. O

Find the odd one out in the series: A, C, E, G, I, K, M, O, Q, R

D. R

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, Mark is in 15th position. If he swaps places with the runner in 20th position, what will be Mark's new rank from the top?

D. 16TH