Question

Look carefully for the pattern, and then choose which pair of numbers comes next:

9 11 33 13 15 33 17

• A. 19 33
• B. 33 35
• C. 33 19
• D. 15 33
• E. 19 21

Answer 1

The correct option is A 19 33

In this alternating repetition series, a random number, 33, is interpolated every third number into a simple addition series, in which each number increases by 2.