Look at this series: VI, 10, V, 11, __, 12, III, ... What number should fill the blank?
Options
A. II
B. IV
C. IX
D. 14
Correct Answer
IV
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.
Number Series problems
Search Results
1. Look at this series: 8, 43, 11, 41, __, 39, 17, ... What number should fill in the blank?
This is a simple subtraction series in which a random number, 93, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.
8. Look at this series: 15, __, 27, 27, 39, 39, ... What number should fill the blank?