What is both possible and impossible at the same time?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

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

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

A woman shoots her husband.

Then she holds him under water for over 5 minutes.

Finally, she hangs him.

But 5 minutes later they both go out together and enjoy a wonderful dinner together.

How can this be?

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

You need to move three matchsticks to form three squares. Can you do it?

What has many teeth, but cannot bite?

The centre of the third figure is empty. What digit should fit inside?