Look at this series: 7, 10, 8, 11, 9, 12, 10, 13, ... What number should come next?	Select.
A) 10	B) 11	C) 12	D) 13	E) 14
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 11.
<result>B</result>
Look at this series: 7, 10, 8, 11, 9, 12, 10, 13, ... What number should come next?