All Puzzles

These are a series of riddles. They are all connected.
1. There are 100 bricks on a plane. One falls off. How many are left?
2. What are the three steps to put an elephant in a fridge?
3. What are the four steps to put a giraffe in a fridge? 4. A lion was having a party and he invited all the animals. All of them came except one. Which one was it?
5. A lady crossed a crocodile filled river and survived, How?
6. She crossed back and died. How?