Which of the following is not a vector

In a certain code language 'I' is coded as '18' and 'R' is coded as '36' then 'TIN' will be coded as ____ in the same code language. 

Select the related word/letters/number from the given alternatives.

CF : JM :: QT : ?

Identify the number, which when added to itself 17 times gives 756.

Select the option that is related to the third number in the same way as the second number is related to the first number.

67 : 96 :: 45 : ?

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

If ‘scanty’ is related to ‘meagre’, then ‘valiant’ is related to ‘_____’.

Select the option in which the numbers are related in the same way as the numbers of the following set:

(5, 500, 10)

Four of the five among the following are similar in such a way to form a group, which one of the following doesn’t belong to the group?