Look at this series: 7, 10, 8, 11, 9, 12, 10, 13, 11, ... What number should come next? Pick:
A) 12	B) 13	C) 14	D) 15	E) 16
This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted.   The answer is 14.
<result>C</result>
Look at this series: 7, 10, 8, 11, 9, 12, 10, 13, 11, ... What number should come next?