Identify the hidden meaning behind this picture?

You are given a set of weighing scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other. The 12 marbles appear to be identical. 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more. Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Different lights make me strange by changing me into different sizes. What am I?

Can you guess the name of the month by looking the below rebus ?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

There is a place where if I stand up straight, I will still be considered sideways.