SCD, TEF, UGH, ____, WKL

QAR, RAS, SAT, TAU, _____

Find the wrong term of the following series : G4T, J9R, M20P, P41N, S90L

The next term of the following letter series will be : CAE, HFJ, MKO, RPT, ….

Find the missing term: L3T, ?, F8P, C12N

Which letter should replace A, D, G, J, M, ?