What do you answer even though it never asks you questions?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Which five letter word can be added at the end of below word to form a
valid word?

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I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

What goes up but never comes down?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?