Once, 9 said contemptuously to 0, "Your skill is only 0." 0 bowed his head and replied respectfully, "I admit that you really admire me, because your skill is ten thousand times that of me (that is, 0× 10000)." 9 swaggered triumphantly, but attracted laughter from other figures.

Mathematicians, biologists and physicists are sitting in cafes on the street, watching people go in and out of a house across the street. They saw two people go in first, and after a while, they saw three people come out. Physicist: "The measurement is not accurate enough." Biologist: "They reproduce." Mathematician: "If one more person goes in now, the house will be empty."

A farmer invited engineers, physicists and mathematicians to enclose the largest area with the least fences. The engineer fenced a circle and declared that it was the best design. Physicists open the fence into a long straight line, assuming that the fence is infinitely long, and think that it is big enough to enclose half the earth. Mathematicians laughed at them. He surrounded himself with several fences and then said, "I'm outside now."

One day, the mathematician felt that he had had enough of mathematics, so he ran to the fire brigade to apply for a job as a fireman. 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, where there was a warehouse, a fire hydrant and a hose. The fire chief asked, "Suppose the warehouse was on fire, what would you do?" The mathematician replied, "I connected the fire hydrant to the water pipe, opened the water pipe and put out the fire." The fire chief said, "Exactly! Last question: suppose you walk into an alley and the warehouse is not on fire, what would you do? " The mathematician was puzzled for a long time and finally replied, "I'm going to set fire to the warehouse." The fire chief shouted, "What? That's terrible! Why did you set fire to the warehouse? " The mathematician replied, "So I turned the problem into a problem I had solved."

The English poet Jannison wrote a poem, several lines of which read: "Every minute, a person is dying, and every minute, a person is born …" A mathematician read it and wrote a letter to question it. The letter said: "dear sir, reading famous books makes people feel fast, but a few lines are illogical and it is really difficult to agree." According to your algorithm, the number of life and death per minute is even, and the number of people on the earth is equal. In fact, the population on the earth is increasing. To be exact, 1.6749 people are born every minute, which is quite different from the number you provided in your poem. For practical purposes, if you don't object, I suggest you use a score of 53, that is, change the poem to: Every minute, a person is dying, and one and two thirds of people are born every minute ... "

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