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 shown in the given two matrices. 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 letter from these  matrices can be represented first by its row and next by  its column, for example 'K' can be represented by 10, 22  etc and 'Z' can be represented by 85, 58 etc. Similarly, you  have to identify the set for the word 'PERK'.