Which letter-cluster will replace the question mark (?) to complete the given series?

F, E, I, G, L, I, O, ?

Which letter-cluster will replace the question mark (?) to complete the given series?

DMT, JOB, PQJ, VSR, ?

Which of the following numbers will replace the question mark (?) in the given series?

345, 356, 368, 381, 395, ?

Which letter-cluster will replace the question mark (?) to complete the given series?

LAT, NDR, PGP, ?, TML

Which of the following numbers will replace the question mark (?) in the given series?

12, 25, 51, 103, ?, 415, 831

Which of the following numbers will replace the question mark (?) in the given series?

2, 4, 10, 28, ?, 244

Which letter-cluster will replace the question mark (?) to complete the given series?

abCD, fgHI, ?, stUV, abCD

Which of the following numbers will replace the question mark (?) in the given series?

29, 33, ?, 113, 369