Su Dongpo's bottom line is: ten years of cold window, entering the 98 th Hospital, abandoning worldly desires, studying hard the Five Classics and Four Books, and taking the exam three times and two times. Today, he must succeed
Examiners and Su Dongpo both embedded the ten numbers from one to ten in couplets, vividly describing the hardships of scholars.
2. Wrong decimal point
Learning mathematics should not only solve problems correctly, but also make no mistakes in the specific problem-solving process.
An old woman living on a pension in Chicago, USA, went home after minor surgery in the hospital. Two weeks later, she received a bill from the hospital for $63,440. When she saw such a huge number, she couldn't help being surprised and fell to the ground and died. Later, someone checked with the hospital. As a result, the computer misplaced the decimal point, and actually only needed to pay $63.44.
A wrong decimal point will actually kill a person. As Newton said, "In mathematics, the smallest error can't be ignored.
When did 3.2 1 century begin?
Century is the unit for calculating age, and a hundred years is a century.
The start year and end year of the first century are 1 and 100 respectively. A common mistake is that some people regard the starting year as the year zero, which obviously does not conform to logic and our habits, because in general, the calculation of ordinal numbers starts from "1" instead of "0". It is this misunderstanding that led to the misunderstanding that the year at the end of the century was 99 AD, which is why 1999 was wrongly considered as the year at the end of the twentieth century and the year 2000 was the year at the beginning of the twenty-first century. Because the AD count is ordinal, it should start with "1", and the first year of 2 1 century is 20065433.