निम्नलिखित वाक्य

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.

TSF, RPJ, PMN, NJR, ?

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.

WUW, TSV, QQU, NOT, ?

Select the letter-cluster that can replace the question mark (?) in the following series. CXB, HUI, MRP, ROW, ?

Select the odd letters from the given alternatives?

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. NIR, JGN, FEJ, ?

Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.