Composite numbers are basically the opposite of prime numbers. Prime numbers are integers that can only be multiplied by 1 and itself, such as 2 and 3. Composite numbers are the numbers that aren't prime. It is formed by 2 smaller integers multiplying together that is more than 1 and itself. An example of a composite number would be 6. Not only can it be formed by 1 multiplied by itself, 6, is can also be formed by multiplying 2 and 3.
14. 33, 39, 51, 57
15. 53, 59, 67
16. 51, 63, 77, 81, 87
All the composite numbers have many factors that multiply together to get them. The prime numbers above are numbers that can only be formed by multiplying 1 by itself.
In total, there were 147 books returned that week that had more than 200 pages. If 116 of those were returned on time, then 31 were returned late. This is about 79 percent of the 147 total. So, there is about a 79% chance that a randomly selected book with 200 pages or more was returned on time, or about 79/100.
These are confined by mountains on each side and can only flow down through a valley. Both types of glacier have tremendous impacts on the surrounding landscape, changing it in various ways as they pass by.
