In the sequence 3, 6, 9, 12, 15, 18, how many times does the number 12 occur?

A. 1

In the sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, how many times does the number 5 occur?

A. 1

In the sequence 5, 10, 15, 20, 25, 30, how many times does the number 25 occur?

A. 1

If a train departs on February 28, 2023, at 10:00 AM and arrives at its destination 72 hours later, what is the arrival date and time?

A. MARCH 3, 2023, 10:00 AM

Alice is ranked 5th from the top and 6th from the bottom in a competition. How many participants are there in total?

B. 11