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: 83, 73, 93, 63, __, 93, 43, ... What number should fill the blank?

A 33

B 53

C 73

D 93

ANS:B - 53

This is a simple subtraction series in which a random number, 93, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.