Select the letter-cluster that can replace the question mark(?) in the following series.TULG, WRPC, ZOTY, CLXU,?FIBQFICRFJCQGIAQ

Select the letter-cluster that can replace the question mark (?) in the following series.TXB,QWE,NVH,KUK,?ITMJTMHTNHSN

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.                                                      MHZ, NIW, OKT, PNQ, ?

What will replace the question mark (?) in the following series?1, 3, 9, 39, 249, 2559, ?.

n each of the following questions a number/letter series is given.Which one of the alternatives will replace the question mark (?)1. 11, 29, 55, ?, 131(A) 110 (B) 81(C) 89 (D) 78

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.