Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?	Choose the correct choice from the following answers
A) 85 B) 97 C) 109 D) 178 E) 112
Answer: Option 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?