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

What can go through glass without breaking it?

How many words can a pen with half refill write?

What has no start, end, or centre?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Solve the puzzle by telling what does below picture means.

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?

If eleven plus two equals one, what does nine plus five equal?

Find out the missing number in the picture attached:

Okay before we begin with the puzzle, do keep in mind that you have to answer it quickly.

You are participating in a car race. Seeking the perfect moment, you overtake the second person in the race. What positions are you in now?