In the sequence 2, 4, 6, 8, 10, 12, how many times does the number 8 occur?

A. 1

In a class of 30 students, A is ranked 12th from the top. What is A's rank from the bottom?

B. 18TH

In the sequence 1, 3, 5, 7, 9, 11, how many times does the number 4 occur?

A. 0

In a race of 15 participants, D is ranked 3rd from the top and E is ranked 4th from the bottom. If D and E swap their positions, what will be D's new rank from the bottom?

B. 11TH

In the sequence 100, 200, 300, 400, 500, how many times does the number 600 occur?

A. 0