Which letter-cluster will replace the question mark (?) in the following series?
CFZ, EGX, HIU, JLS, MPP, ?
Using conversion table,
$$CFZ=3+6+26=35$$ , $$EGX=5+7+24=36$$ , $$HIU=8+9+21=38$$ , $$JLS=10+12+19=41$$ , $$MPP=13+16+16=45$$
So, 35,36,38,41,45 is in a series.Next number should be 50.
So,$$OUN=15+21+14=50.$$
D is correct choice.
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