Coding and Decoding Questions

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

If IRON is written as GOKI, then KNIFE may be written as

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

6 x 2 x 9 = 269

8 x 7 x 1 = 781

4 x 1 x 3 = ?

If x stands for - , + means x , ÷ means + and - means ÷ , then what is the value of the given expression?

175 - 25 ÷ 5 + 2 x 3 + 10 = ?

After interchanging + & x and 12 &18, which of the following equations will hold true?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

7 V 13 M 35 L 7 S 6 = ?

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

If the code for MOTHER is JRQKBU then what is the code for PRINCIPAL?