In the series AABABCABCDABCDE..., which letter occupies the 100th position?

What should come in place of (?) in the given letter series? ACE, FGH, ?, PON

In the series of letters given below, which option will come in the place of question mark (?)? BXF, DVI, FTL, HRO, ?

The missing letters in the series ab _ _ a _ _ b _ _ cb are:

In English alphabet, which is the 17th letter from your left?

Which one of the following is NOT a number of the series? 1, 8, 27, 64, 125, . . .