Are these sentences corrrect or not

[Bamdad]

Please help me, I want to know are these sentences correct or not
Thanks

What could have happened if Sony hadn't removed the recording function and speaker?

What would you do if you were chairman of Sony?

What would happened if Masaru Ibuka didn't ask silly question?

What will happen for all of us if someday we don't have any digital device?

What would happen if Bill Bowerman didn't invent Nike Shoes?

What would happen if we ask Silly question?

What would happen if Fred Smith didn't need to delivery something to somewhere?

Why children aren't afraid to ask silly question?

[arzgol]

Please help me, I want would like to know are if these sentences are correct .or not Thanks

What could have happened if Sony hadn't removed the recording function and speaker?

What would you do if you were chairman of Sony?

What would happened if Masaru Ibuka didn't ask silly question?

What will happen for all of us to us if someday we don't have any digital device?

What would happen if Bill Bowerman didn't invent Nike Shoes?

What would happen if we ask Silly question?

What would happen if Fred Smith didn't need to delivery deliversomething to somewhere?

Why children aren't afraid to ask silly question? Why aren't children afraid to ask silly question?

I'm not a teacher, rather a learner like you. Please teachers rectify me.

Please look at explanation which was written by Fivejedjon.

With the exception of the BE used as a full verb and, for a tiny minority of speakers, HAVE as a full verb, we form questions with all full verbs using an auxiliary verb; the construction is: ( question word) auxiliary verb (n't) + subject + full verb:

Can you tryharder?
Where will you be this time next year?
Hasn't the leader of the opposition spoken yet?
Why aren't you doing your homework?

If there is no auxiliary verb in the affirmative, then we use part of DO as the auxiliary in the question form:

Do you understand this?
How do you pronounce'awry'?

Why didn't Lindsay come to my party last Saturday?

As I noted above, BEis an exception - we don't use DO to form questions:

Is'nt that Henry's French teacher?
Where were you yesterday?

The only exception to what I have written above is when the question word is the subject of the sentence:

(Emma saw Luke): Who did Emma(subject) see? Who(subject) saw Luke.
(The cat ate the mouse): What did the cat (subject) eat? What(subject) ate the mouse?

[5jj]

What would happened if Masaru Ibuka didn't ask silly questions?

What would have happened if Bill Bowerman didn'thadn't invented Nike Shoes?

What would happen if we asked Ssilly questions?

Why aren't children afraid to ask silly questions?