If ‘DEAN’ is written as ‘NOKX’ then how ‘NEED’ is written in certain language?

If 'dust' is called 'air' , 'air' is called 'fire' , 'fire' is called 'water' , 'water' is called 'colour' , 'colour' is called 'rain' and 'rain' is called 'dust' , then where do fish live ? 

In a certain code language, “ARE” is coded as “87”, and “NOT” is coded as “4197”. How will “CAT” be coded in that language? 

Direction : Study the following information carefully and answer the questions given below.
In a certain code language:
“Never talk between others” is coded as “sm nt ro fi”
“Others should be helpful” is coded as “ro el ac jq”
“Never be time specific” is coded as “fi dg el pa”
“Focus between specific hours” is coded as “hy dg nt ks”

The code “el” is coded as which of the following word?

Direction: Study the following information to answer the given questions.
In a certain code language:
“Team work is secret” is written as “4K@, 1M@, 16S#, 26T$”
“secret was that makes” is written as “4S%, 1T@, 20S&, 26T$”
“The common people is” is written as “1E%, 10N$, 23E$, 16S#”
“Which achieve uncommon results” is written as “4H&, 8E!, 2N*, 25S!”

How “23E$” will be coded?

If ROSE is coded as 6821, CHAIR is coded as 73456 and PREACH is coded as 961473, What will be the code for SEARCH?

In a certain code, COLD is coded as GSPH, then how is NOT coded in the same way?

If REASON is coded as 5 and BELIEVED as 7, then what is the code for GOVERNMENT?