Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?
Choose the correct choice from the following answers:
A) 7 B) 10 C) 12 D) 13 E) 14
Explanation: This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted.   Answer: Option 10
<result>B</result>
Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?