Verbal Reasoning - Mental Ability Questions

In the question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9. A from these matrices can be represented first by its row and next by its column. e.g. 'O' can be represented by 65, 88 etc. and 'F' can be represented by 13, 42, etc. You have to identify the set for the word ‘NAVY’.

The weights of 4 boxes are 20, 40, 50 and 30 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

Select the missing images from the given responses:

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

AK, CO, ES, ?

Select the related number from the given alternatives.
-3/7 : 7/3 :: 9/2 : ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
2, 10, 30, 68, ?

In a certain code language, '-' represents 'x', '÷' represents '+', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.

12 - 2 + 6 x 20 ÷ 18 = ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

JI, LK, NM, ?