1,2,3,9
**edit: actually, it would be 1,2,3,4 and 5...because you need 5 numbers. (or 5!)
It seems to me that the ability to count, in whole numbers, would have to come before the more sophisticated process of designing a calendar. As a result, there would have been no calendar around when whole numbers originated. But perhaps you think (or know) different.
Fifteen thousand, fifteen hundred, and fifteen dollars can be written numerically as $15,515. This is because fifteen thousand is written as 15,000, fifteen hundred is written as 1,500, and fifteen is written as 15. When you add these numbers together, you get a total of 15,000 + 1,500 + 15 = 15,515.
A counting number is one you would use normally, as in 1,2,3,4,5... not including zero. A whole number includes zero, but is not a negative integer.
You can get any whole number as the answer. That is because there are infinitely many numbers which you can divide and they will give rise to different numbers for the answers.
composite whole numbers
Whole numbers are known as zero plus the "counting numbers." (1, 2, 3, ...) So, the whole numbers of 21 would be 0 - 21. (23 numbers.)
15,000. Thousands have three zeros at the end, so you would simply add three zeros to fifteen for 15,000.
The main difference is that with whole numbers the decimal point is "hiding" (after the last digit of each whole number) whereas with decimal numbers it is clearly visible. In both cases the numbers are added with the decimal points aligned - with whole numbers there are no digits after the decimal points so the decimal points are not written, but if they were they would be visible after the last digit of the whole numbers and they would be automatically aligned; with decimal numbers there may be a different number of digits after each decimal point so it is up to the person doing the arithmetic to ensure the decimal points are aligned.
The population of your town, state, country will all be whole numbers but you would not use the raw numbers for any of them.
whole numbers would be 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20.
Which subset of the rational numbers best describes the dimensions of a rectangle
The integers are the set { ...,-3,-2,-1,0,1,2,3,...} where the ... means that the list continues forever. Since this set includes the negative numbers whihc are not whole numbers, the answer would be no. The whole numbers are the set {0,1,2,3,...}