Fire safety knowledge, fire safety knowledge jokes

One day, the mathematician decided that he had had enough of mathematics, so he ran to the fire brigade and announced that he wanted to be a firefighter.

The fire chief said: "You look good, but I have to give you a test first."

The fire chief took the mathematician to the alley in the backyard of the fire brigade. There was a warehouse, a fire hydrant and a hose. The fire chief asked: "Suppose there was a fire in the warehouse, what would you do?" The mathematician replied: "I connected the fire hydrant to the hose, turned on the water hose, and put out the fire." The fire chief said: "Exactly! Last question: What would you do if you walked into the alley and there was no fire in the warehouse?" The mathematician thought for a long time and finally replied: "I will light the warehouse on fire." The fire captain shouted: "What's terrible? ! Why did you set the warehouse on fire?" The mathematician replied: "This simplifies the problem into a problem that I have already solved."