What does this below rebus puzzle mean?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

Find the missing number in the image below.

Can you count the number of lines in the below picture?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

If your uncle’s sister is not your aunt, what relation is she to you?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

If two's company, and three's a crowd, then whats four and five ?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?