If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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?

How many times in a given day, minutes and hour clock comes in a straight line ?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

What makes this number unique: 8,549,176,320?

I am the fastest animal but cannot climb the tree. What am I?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

What word begins and ends with an E, but has only one letter?