Find the missing letters: RP_PP_PRR_J_PJPR
Find the missing letters: RP_PP_PRR_J_PJPR
Filling the blanks with J, J, P, P gives the sequence RPJPPJPR RPJPPJPR - the same 8-letter block 'RPJPPJPR' repeated twice. Only this option makes the sequence a clean repeating pattern.
Re-check your working by substituting the answer back into the original question.