Coding and Decoding Questions

If A denotes '+', B denotes '-', C denotes '/', D denotes 'x' then the value of the expression 9 D 48 C 6 B 16 A 3 is

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

18 + 2 x 30 ÷ 6 - 4 = ?

In a certain code language, “FRAK” is written as “35” and “MALT” is written as “45”. How is “TRIM” written in that code language?

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

7 ÷ 10 - 15 + 6 x 18 = ?

In a certain code language, “STOINS” is written as “ROHPST”. How is “MARCUS” written in that code language?

If 5Δ1 = 40, 9Δ9 = 0 and 7Δ1 = 60, then find the value of 4Δ9 = ?

If 'are you sam' = 'ri ai ki', 'all hate you' = 'vi li ri' and 'all are fake' = 'mi ai li' then which represents 'hate'?

If DIJOB means CHINA, then the last letter of the word got by decoding KBQBO is