Question 37
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
MN, NM, OL, PK, ?
Solution
MN ==> (M+1) (N-1) ==> NM
NM ==> (N+1) (M-1) ==> OL
OL ==> (O+1) (L-1) ==> PK
PK ==> (P+1) (K-1) ==> QJ
Hence 'QJ' will come in place of the question mark.
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