Direction: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.
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					 p_ _p _ _ p q r p _ r
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                        - q r s t q
- q q r r q
- r q r q
- q q r q r
 
Correct Option: C
The given letter series in below pattern.
p q r  
Using the same pattern, we will get complete letter series.
p q r  / p q r  / pqr / p q  r
 
	