1. 

what should come next in the following series?

9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 9 8 7 6 5 4 3
9 8 7 6 5 4 9 8 7 ?
A. 5
B. 4
C. 6
D. 1
E. None of these

Answer: Option C

Explanation:

Pattern of the series is as shown below

9 8 7 6 5 4 3 2 1 ;

9 8 7 6 5 4 3 2 ;

9 8 7 6 5 4 3 ;

9 8 7 6 5 4 ;

9 8 7 6 ;