As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Which number should replace the question mark?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

A father's child, a mother's child, yet no one's son.

Who am I?

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?

The cream is heavier than Milk. True or False?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

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