First, the smallest number.
The ancient and huge family of natural numbers is composed of all natural numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and so on. The smallest one is "1", and the largest one can't be found. You can look for it if you are interested.
Second, there is no maximum natural number.
Maybe you think you can find a largest natural number (n), but you will immediately find another natural number (n+ 1) greater than n, which means that you will never find the largest natural number in the family of natural numbers.
Third, "1" is indeed the smallest in the family of natural numbers.
The natural number is infinite, and "1" is the smallest of the natural numbers. Some people disagree that "1" is the smallest natural number, saying that "0" is smaller than "1" and "0" should be the smallest natural number. This is wrong, because natural numbers refer to positive integers, and "0" is the only non-positive non-negative integer, so "0" does not belong to the family of natural numbers. "1" is indeed the smallest in the family of natural numbers.
Fourth, where is the one yuan?
Three people stayed in a hotel, and the price per person per day was 10 yuan. Everyone paid 10 yuan, making a total of 30 yuan for the boss. Later, the boss gave a discount of 5 yuan and asked the waiter to return it to them. As a result, the waiter hid 2 yuan, and the remaining 3 yuan was refunded by everyone 1 yuan, which means that everyone spent 9 yuan. Three people always spent * * * 27 yuan, plus the waiter's total ***29 yuan in 2 yuan. So, where did the dollar go? Leave the question to everyone.