Identify the hidden meaning behind this picture?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Can you find a five letter word that is left with only two letters if one is removed?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

Identify the 10 differences between the two given pictures.

Can you count the number of triangles in the given figure?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?