Do all companies ask candidates to solve some crazy puzzles before interviewing them? These puzzles have nothing to do with the job!

Not job but brain

No, not all companies use them, but those who do (in my experience) struggle to hire because they put too much stock in what they do or do not reveal.

I have one experience where the interviewer clearly revelled in his position of knowing the answer and holding it over me. This was stage 5 of the interviews. I had already proven myself capable in many ways, but he enjoyed watching me squirm by continually making the puzzle more complex. I eventually gave up - I had already decided I didn't want to work there because of what I had seen that day about individuals and attitude.

Instead of silly problems, give them real world problems like @Letmecode said. For example...

You're locked in a room and there is a small hand-sized hole in the wall next to the door with dried blood around it. Also, the room is slowly filling with water. You're goal is to escape.

Ok, maybe that was over the top. This is what happens when I only get 3 hours of sleep.

@Letmecode it's simple really. There is a button in the hole that opens the door. But if you push it, a blade drops and severs your hand. So you use your shoe to push the button and escape.

@chiragiem36 There was a frontend html/css related job for which we were required to take a codility test. I mean how does solving a fucking math problem show my ability to write html/css?

It tests whether you can think deeper.

The basic reason behind MAT is to check your mental ability and reasoning

@MissDirection But that's more about lateral thinking than actually solving a real problem. I'd hate that in an interview. By all means, ask me something a bit left field that I'll have to break down and solve piece by piece. But logic puzzles are not, in my view, the right tool.

@CrankyOldDev oh I agree, but I think if you are going for a Dev job and locked you in a room that started filling with water, well, that would be crazy lol

When i gave my first interview, they asked me like 8-10 puzzle

I had interviews where the company gave me piece of anonymised data and asked to do stuff with it, I think it's the best way to really test the skills of a candidate