If you were alone in a dark cabin, with only one match and a lamp, a fireplace, and a candle to choose from, which would you light first?
You would light the match first. Without it, you couldn't light any of the other appliances.
There are a dozen eggs in a carton. Twelve people each take a single egg, but there is one egg left in the carton. How?
The last person took the carton with the egg inside.
A boat has a ladder that's ten feet long, and hangs off the side of the boat, with its last two feet submerged in water. If the ocean tide rises five feet, how much of the ladder will be underwater?
Two feet. If the ocean rises, so will the boat, and the amount of ladder under the water will remain the same.