Q63
9, 12, 11, 14, 13, 16, 15, ... choose which pair of numbers comes next?
A.
14, 13
B.
18, 21
C.
14, 17
D.
12, 13
E.
18, 17
AnswerAnswer: Option E
Solution
Answer: Option E
Solution:
This is a simple alternating addition and subtraction series. First, 3 is added, then 1 is subtracted, then 3 is added, 1 subtracted, and so on.