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					 Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
 xy_kx_zk_yzk xyz_ _
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                        - zyxkx
- zykxz
- zkxyk
- zxykx
 
Correct Option: A
The pattern of given letter series is :-
xy z k
After completing the pattern, we will get complete letter series.
xy z k/x y zk/ x yzk/ xyz k/x
 
	