What runs around the whole yard without moving?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

What number divided by 4 is the same as that number minus 4?

Be active and find the killer in the picture Riddle below.

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

Using Only Five 5's and any mathematical operator make sum as 37

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.