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

A. 1

In the sequence 5, 10, 15, 20, 25, 30, how many times does the number 15 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 2, 4, 6, 8, 10, 12, how many times does the number 6 occur?

A. 1

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

A. 1