Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?  Pick one
A) 100
B) 126
C) 172
D) 178
E) 155
178   178   This is an alternating division and addition series: First, divide by 2, and then add 8.
<result>D</result>
Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?