what does the below rebus means?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

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

If six children and two dogs were under an umbrella, how come none of them got wet?

How can a man go eight days without sleep?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

What's the only room from which no one can enter or leave

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

A bridge is about to collapse. There are four people P, Q, R and S on one of the sides. Before the bridge collapses, they want to cross it. Now since the bridge is too weak, it can only stand the weight of two people at a time. Also, it is night time and nothing is visible. They have just one torch with them.

Now P takes one minute to cross the bridge, Q takes two minutes to cross, R takes five minutes to cross and S takes ten minutes to cross.

The bridge will collapse in seventeen minutes. How will they be able to cross the bridge before it collapses?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?