What is the word or phrase?

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

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

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

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

In the Wild West, you are challenged into a death match by two bounty hunters nicknamed Golden Revolver (GR) and Killer Boots (KB). You accept the challenge. None of you want to waste any of the bullet and so a certain rules are laid down:

1) All of you will shoot in a given order till the last man standing.
2) Each of you shoots only once upon his turn.
3) If any one of you is injured, the other two will finish him off with an iron rod.
4) The worst shooter of all (which is you) shoots first and the best one shoots at the last.

Now, how will you plan things if you know that you hit every third shot of yours, KB hits every second shot and GR hits every shot ?

Out of four images which one is the odd one out?