What's the difference between "I did the exam" , "I made the exam" and "I took the exam"?

I only use this expression--take the exam in real life communication but I found that someone did say "I did the exam". After searching some English Forum (Quora, englishpage, BBC learning English), "did the exam" might have three meanings.

The first one is "I passed the exam"
The second one is "I prepared the exam".
The last one is "I took the exam"

Will you say"I did the exam"?
Could you please help me distinguish the difference between"I did the exam" and "I made the exam".

Thanks! :)

Question

What's the difference between "I did the exam" , "I made the exam" and "I  took the exam"?

I only use this expression--take the exam in real life communication but I found that someone did say "I did the exam". After searching some English Forum (Quora, englishpage, BBC learning English), "did the exam" might have  three meanings.

The first one is "I passed the exam" 
The second one is "I prepared the exam". 
The last one is "I took the exam"

Will you say"I did the exam"?
Could you please help me distinguish the difference between"I did the exam" and "I made the exam".

Thanks! :)

Answer

I made the exam- indicates that the speaker created the exam paper (or whatever it is).*

I took (or sat) the exam = I did the exam. Here, there are no other meanings aside form having completed the exam.

In the above two expressions, it is not implied that the speaker passed the exam!

[*Please note- I am from England so I’m unaware of other possible meanings; however, in formal English, you would be forgiven to understand it as explained above.]

Answer

It's getting very confusing:
I recall that we would say "to sit for an exam". 
We don't use to do an exam, to make an exam, to take an exam.
But these days, people may be using English more liberally. So I am not sure any more. LOL.

Answer

Thanks for the question
I have never thought about it and always said, "I did the exam."