How can you make number one disappear by adding something to it?

Rearrange the letters in "new door" to make one word.

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

What does the below image rebus riddle means ?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

I have teeth but i don't bite. Who Am I ?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

What building has the most stories?