Coding and Decoding Questions

In a certain code language, "COPIOUS" is written as "2345389" and "GENEROUS" is written as "16760389". How is "PIGEON" written in that code language?

In a certain code language, "SINGING" is written as "TJOHJOH". How is "DANCING" written in that code language?

If 92 A 42 B 32 = 56 and 72 A 22 B 12 = 44, then 112 A 52 B 72 = ?

If "-" means "plus", "x" means "divide", "÷" means "multiply" and "+" means "minus", then 26 + 400 x 20 – 21 ÷ 12 = ?

The following equation is incorrect. Which two signs should be interchanged to correct the equation? 12 - 6 x 5 + 20 ÷ 4 = 31

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

In a certain code language, "OCEAN" is written as "PEHES". How is "RIVER" written in that code language?

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