I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

I don't get anymore wetter, no matter how much rain falls on me.

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

By what process could you make a 'Tea-Table' into food?

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?

It belongs to you, but other people use it more than you do. What is it?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

What has 88 keys?