Question 1: In mathematics, is the smallest number 0 or 1? There is no doubt that 0 is the smallest natural number after being classified as a natural number. So is the smallest number 1 or 0? To solve this problem, we must first understand the concept of "several digits". Natural numbers usually contain several digits, which are called several digits. A number containing a number is called a number ... for example, 2 is a number; 20 is a two-digit number; However, it should be noted that it is generally not said that the number 0 is a few digits. If 0 is regarded as a number, then "00 can be regarded as a two-digit number" and "000 can be regarded as a three-digit number" ... A number with a value of 0 will be arbitrary and meaningless, so the smallest number should be 1.

Question 2: Math problem. What is the largest sum of single digits? The smallest sum is 19.

Question 3: What is the smallest number? The smallest number is 0.

One of the ideas: Why should we classify 0 as a natural number?

Historically, there have been two views on whether 0 is a natural number in mathematics circles at home and abroad: one thinks that 0 is a natural number, and the other thinks that 0 is not a natural number. Since the founding of the People's Republic of China, textbooks for primary and secondary schools in China have always stipulated that natural numbers do not include 0. At present, most foreign mathematicians stipulate that 0 is a natural number. In order to facilitate international communication, People's Republic of China (PRC) national standard (GB 3 100-3 102-93), quantity and unit (1 1-2.9) was promulgated in 1993. Therefore, in the revision of mathematics textbooks for primary and secondary schools in recent years,

Question 4: Is there any way to pass the graduation thesis defense? Be fully prepared ―― nonsense!

There is a self-statement in the defense, which is to introduce the content of the paper! This time should be as long as possible-the total time for defense is relatively similar, about 35 minutes to 55 minutes (different majors vary greatly). The less time you leave for the teacher to ask questions, the less questions he can ask!

Applying my experience in those years, our defense time was 45 minutes, my paper introduction was prepared for 50 minutes, and finally I had to stop! There are 10 minutes left in the final question time. Ask only the basics, and ask nothing else! ! !

If you leave your tutor for longer, say, 20 minutes, then start asking questions from the basics. Unless you learn well, it will be difficult to answer ―― after all, people are experts and will find out where there are loopholes and imperfections! But if there is not enough time, you can only ask the fur!

This is all my experience. I hope it helps you.