I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

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?

Aaron, Brad, Christopher, Danny and Elvis decided to play a game of tiddlywinks. In this game they decided that one win will get 1 point for winning, 0 for losing and 1/2 in case of a tie.

They finished the game in alphabetical order and it was found that the scores were different for each person.

Based on the following two statements, can you find out the result of the individual games?
Brad: No one could finish like me, without a loss.
Elvis: No one played worse than me, I finished without a single win.

What has many keys but can’t open a single lock?

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

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

How many sides does a circle have?