Coding and Decoding Questions

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

10 V 12 M 42 L 6 S 4 = ?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

54 x 9 - 3 ÷ 4 = ?

If the given interchanges namely signs + and / and numbers 2 and 4 are made in signs and numbers, which one of the following would be correct?

In a certain code language, “LATIN” is written as “ODWLQ”. How is “ROUTE” written in that code language?

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

If BOULDER is coded as ZMSJBCP, then how will ELK be coded as?

If L stands for +, M stands for -, N stands for x and P stands for /, then 8 N 9 L 60 P 3 M 13 = ?

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