Alice is ranked 15th from the top and 16th from the bottom in a competition. How many participants are there in total?

B. 31

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

A. 35TH

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?

C. 6TH

In the series 4, 8, 12, 16, 20, how many times does the number 12 appear?

A. 1

If a train departs on September 5, 2023, at 3:00 PM and travels for 5 hours and 30 minutes, what time will it arrive?

A. 8:30 PM