In a race, there are three runners: Alex, Brian, and Chris. Alex finished before Brian but after Chris. Who finished last?

B. BRIAN

What is the 15th letter of the English alphabet?

A. O

In a sequence of letters: A, C, E, G, ?, K. What is the missing letter?

B. H

In a series of numbers: 2, 4, 8, 16, ?, 64. What is the missing number?

B. 32

In a pattern of shapes: Circle, Triangle, Square, Circle, Triangle, ?, Square. What is the missing shape?

B. TRIANGLE