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?

Some equations are solved on the basis of certain system. Find out the correct answer for unsolved equation on that basis: 4 x 5 x 8 = 584, 7 x 3 x 9 = 397, 9 x 7 x 3 = ?

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

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

If BROTHER is coded as GWTYMJW, then SCHOOL is coded as

If 18 x 12 = 206 and 19 x 22 = 408, then 23 x 36 = ?