Coding and Decoding Questions

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

In a certain code language, “MUTE” is written as “60” and “TYRE” is written as “69”. How is “HYPE” written in that code language?

In a certain code language, “TRUCKS” is written as “WPXANQ”. How is “MOPERS” written in that code language?

If "-" means "plus", "x" means "divided by", "÷" means "multiply" and "+" means "substraction", then

If 3#5 = -20, 1#4 = -30 and 6#5 = 10, then find the value of 4#9 = ?

 In a certain code language, “POLIS” is written as “SROLV”. How is “MRUGS” written in that code language?

If RESEARCH is $#!#%$&@ then SCARE is

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