Select the combination of letters that when  sequentially placed in the gaps of the given letter series will complete the series .
gfe_ig_eii_fei_gf_ii

Arrange the given words in the sequence in which they occur in the dictionary.
i. Rainbow
ii. Rancour
iii. Rattle
iv. Rainy

Select the letter that can replace the question0a mark (?) in the following series.
K, B, N, D, Q, F, T, H,?

In the English alphabet, if B becomes A and P becomes O, then K becomes?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
o p _ o s _ t _ o _ p o _ i t e _ p p o _ i _ e 

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

AYD, BVF, DRH, ?, KGL

The series given below contains a sequence of numbers. Identify the incorrect combination.
5, 6, 7, 8, 10, 11, 13, 15, 19

In the given word ‘MOTIVATION’ if the vowels are changed to the next letters and the consonants are changed to the previous letters as per the alphabetical series, then which letter/letters are repeated more than once?