Coding and Decoding Questions

If 19 $ 7 = 312 and 23 $ 9 = 448, then 31 $ 11 = ?

In a certain code, 592 means 'grapes are sweet', 374 means 'I like oranges' and 267 means 'oranges are sour'. Which digit represents sour?

If 30%6 = -5, 10%5 = -2 and 10%2 = -5, then find the value of 80%8 = ?

If -2@-4 = -8, -1@-8 = -8 and -1@6 = 6, then find the value of -1@7 = ?

If mathematical operators '-' and '/' are interchanged, then the value of 15 x 4 ÷ 15 - 11 x 33 ÷ 98 is

If 'x' means 'addition', '­' means 'division', '/' means 'subtraction' and '+' means 'multiplication', then which of the equation is correct

If "$" means "addition", "@" means "division", "#" means "multiplication" and "%" means "subtraction", then 84 @ 12 # 3 $ 24 % 35 = ?

A word is represented by only set od numbers as given in any one of the alternatives, Thes sets of numbers given in the alternatives are represented by two classes of alphabets as shown in the given 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, 'A' can be represented by 20.41 etc and 'T' can be represented by 89,85 etc. Similarly, you have to identify the set of the word 'CORN'