Find the missing number?

V, VIII, XI, XIV, ? , XX 

In this question, a sequence is given, with one term missing. Choose the correct option from the given options.
10 , 18 , 28 , 40 , ? 

Direction: Four of the following are alike in a certain way based on the English alphabetical series and so form a group. Which is the one that does not belong to that group?

(1) LOK
(2) WZV
(3) RUQ
(4) DFC
(5) ILH

Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster.

GOOD : HSXT :: BEST : CIBJ :: COOL : ?

In the following question, select the odd number pair from the given alternatives.

Find the odd word in the following options.

563, 647, 479, 815, (…)