1.In a room, there are three switches, each controlling a different light bulb. You can only enter the room once. How can you determine which switch controls which light bulb?
2.In a bag, there are three red balls and three blue balls. Without looking, how many times do you need to pick a ball to ensure you get two of the same color?
3.In a triangular room, there is a light in each corner. You can only enter the room once. How can you determine which switch controls which light?
4.What comes next in the sequence: 1, 11, 21, 1211, 111221 …
5.At a crime scene, there is a table with a glass of water and a piece of paper. The water is poisoned. If someone drinks the water, they will die. However, the culprit is drinking the water. Why?
6.There is a boat with a pole in it, and an ant is on the pole. What will the ant do if the boat sinks?
7.In a room, there is a cat, a table, and a chair, but you cannot see the cat. How do you know the cat is there?
8.A person is standing in the rain without an umbrella or a hat, and their hair doesn’t get wet. Why?
9.In a box, there are some items. If you take out half of them, how many items are left?
10.In a room, there are three switches, each controlling a different light bulb. However, the positions of the bulbs and switches do not correspond. You can only enter the room once. How can you determine which switch controls which light bulb?