Coding and Decoding Questions

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

18 x 12 ÷ 5 - 10 + 10 = ?

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

9 ÷ 12 - 15 + 4 x 10 = ?

In a certain code, 324 means 'are you alright', 783 means 'you come home' and 9271 means 'we are at home'. Which digit represents 'COME'?

In a certain code language, "DELETE" is written as "#@^@%@" and "GRAM" is written as "!?*&". How is"TELEGRAM" written in that code language?

If 10$25 = 8, 12$25 = 10 then what is the value of 14$53 = ?

If 6@1 = 12, 6@2 = 24 and 9@9 = 162, then find the value of 4@6 = ?

If 9#3=6; 15#3=9; 60#4=32; then what is the value of 27#3=?

If ETHANOL is coded as HWKDQRO, then how will MIX be coded as?