No one wants to have it, but if one got it, he does not want to lose it. What is It?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

I add 5 to 9 and get 2. The answer is correct, so what am I?

Can you solve the below tricky visual equation?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?