Cold joke, IQ problem

A hunter came home with a sheep, a wolf and a cabbage and met a river on the way. There is only one boat by the river, but it is too small. At most, you can only take the hunter and another thing across the river at a time. But when the hunter is away, the wolf will eat the sheep and the sheep will eat the cabbage. Excuse me, how to safely transport wolves, sheep and cabbage across the river?

02. Topic difficulty: medium.

There are 10 sweets in the teacher's box, and there are just 10 students.

The teacher said, each of you should be given a candy, and there is another one in the box. How to divide it?

03. Topic difficulty: difficulty

Xiaoming and Xiaohua bought 10 Jin of honey and put it in a big bottle. Divide the honey equally, there are only two empty bottles, one is exactly 7 kg and the other is exactly 3 kg. How can I separate honey in the simplest way?

First question: Take the sheep away first, and then the hunter will come back. Then the wolf was transported, the hunter brought the sheep back, and then the cabbage was transported, and the hunter came back. Finally, it is OK to carry the sheep over.

The second question: everyone gives a candy, and the last one is given to one person together with the box.

Question 3: 1. Fill nearly 3 bottles and pour 7 kg bottles.

2. Fill the 3kg bottle again, and then pour the 7kg bottle. At this time, there are 6 kilograms of honey in the 7 kilograms bottle.

3. Fill the 3kg bottle again, and then pour the 7kg bottle. The 7 kg bottle is full, 2 kg of honey is left in the 3 kg bottle, and the 7 kg bottle has exactly 7 kg.

4. Pour all the honey in the 7 kg bottle back into the 10 kg bottle. At this time 10 kg still has 8 kg in the bottle. Now pour 2 kg of honey from the 3 kg bottle into the 7 kg bottle.

5. Fill the 10 kg bottle with 3 kg of honey. Then pour this 3 kg honey into a 7 kg bottle.

At this time, there are 5 kg, 10 kg bottles in the 7 kg bottle.