Identify the hidden meaning behind this picture?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

You need to remove two matchsticks to make the below equation true. Can you do it ?

You see me once in June, twice in November, and not at all in May. What am I?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Name a key which is hardest to turn.

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???