Question - Look carefully for the pattern, and then choose which pair of numbers comes next.
40 40 31 31 22 22 13
A. 13 4
B. 13 5
C. 4 13
D. 9 4
E. 4 4
Answer -
Option A
Explanation:
This is a subtraction series with repetition. Each number repeats itself and then decreases by 9.