What breaks yet never falls, and what falls yet never breaks?

Can you write down eight eights so that they add up to one thousand?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

I look at you, you look at me I raise my right, you raise your left. What am I?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

Can you place three balls such that the equation shown in the picture holds true?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Why did the Girl throw the butter out of the window?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?