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

Jack and Joseph are well-known golf rivals. One Day during a match, they were level at a score of 30. Jack hit a bad shot and Joseph added 10 to his score. Joseph then hit an awesome shot and he won the game.

How ?

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

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

What two things can you never eat for breakfast?

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

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?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?