Identify the hidden meaning behind this picture?

You can see three almost identical images below. Can you spot the odd one out from them?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

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.

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

What is the word or phrase?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.