What seven-letter word has hundreds of letters in it?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

What has 88 keys?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

Can you replace the question mark with the correct number?

There are forty elephants and they have forty-fore heads. How can this be possible?

What does this rebus means ?

Find out the missing number in the picture attached:

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?