Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?

Look at this series: 664, 332, 340, 170, ____, 89, ... What number sho

1.	Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?
A.	85
B.	97
C.	109
D.	178
Answer» E.