Look at this series: VI, 10, V, 11, __, 12, III, ... What number should fill the blank?
Choose the correct choice:
A) II
B) IV
C) IX
D) 14
E) None
Explanation: This is an alternating addition and subtraction series. Roman numbers alternate with Arabic numbers. In the Roman numeral pattern, each number decreases by 1. In the Arabic numeral pattern, each number increases by 1.   Answer: Option IV
<result>B</result>
Look at this series: VI, 10, V, 11, __, 12, III, ... What number should fill the blank?