If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

I have an eye but still cannot see.

Who am I?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Can you find the key in the picture below?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?