Which language is very useful from all of them?

Question

Which language is used a lot,and very famous?

Answer 1

On a technical aspect, C and C++ are the base for MANY things. They are extremely fast and close to hardware.

Answer 2

Every language is useful. What your goal of programming, its what language you should choose.

Answer 3

I like J,JS from all of them.
And I try to study deeply both of them.
But I want to know that which language is used a lot off from all of them.