That list is missing 9 and 18. Composite numbers have more than two factors. That list, when completed, comprises the first counting numbers with more than two factors.
The first six composite numbers are: 4, 6, 8 , 9, 10, and 12.
The numbers 4, 6, 8, 9, 10, 12, 14, 15, 16, 18 are the first ten composite numbers.
You can select 12 numbers for the first digit, 11 numbers for the second digit, and 10 numbers for the third digit; so 12*11*10 = 1320 sets of 3 numbers can be made out of 12 different numbers.
The first 10 composites are: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18.
The first 12 composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, and 21.
The first 6 composite numbers are 4, 6, 8, 9, 10, and 12.
No, the first abundant number is 12.
To find the median of a set of numbers, you first need to arrange them in numerical order. In this case, the numbers are 10, 12, 19, 18, 12, 13, and 12. When arranged in ascending order, the numbers become 10, 12, 12, 12, 13, 18, 19. Since there are seven numbers in the set, the median is the middle number, which in this case is the fourth number, which is also 12. Therefore, the median of the given set of numbers is 12.
12
2, 4, 6, 8, 10, 12, 14, 16, 18 and 20.
4, 6, 8, 9, 10, 12, 14, 15, 16, 18
4, 6, 8, 9, 10, 12, 14, 15, 16, 18