In the sequence 1, 3, 5, 7, 9, 11, how many times does the number 6 occur?

C. 0

In the sequence 10, 20, 30, 40, 50, how many numbers are multiples of 15?

A. 1

In the sequence 4, 8, 12, 16, 20, how many times does the number 12 occur?

A. 1

In the sequence 7, 14, 21, 28, 35, how many times does the number 14 occur?

A. 1

In the sequence 7, 14, 21, 28, 35, 42, how many times does the number 28 occur?

A. 1