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

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

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?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?