Number Series - Verbal and Reasoning

Directions to SolveLook carefully for the pattern, and then choose which pair of numbers comes next.
Q1:

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

A 85

B 97

C 109

D 178

ANS:D - 178

This is an alternating division and addition series: First, divide by 2, and then add 8.