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?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Three people check into a hotel. They pay $60 for the rent of the room. After they check-in, the manager realize that the rent for the room is $55. So, he gives $5 to the bellboy and asks him to give it to them. The bellboy thinks that it will be difficult for the three people to share $5 among them and seeking the personal benefit, he pockets $2 and gives the remaining $3 to them.

Now, each person paid $20 and got back $1. In this manner, each of them paid just $19 which totals to the amount of $57. The bellboy has $2 with him and adding them, we get $59. So where is the remaining $1?

What do you call a fish without an eye?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Who always enjoys poor health?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What has lots of eyes, but can’t see?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.