1, 2, 4, 5, 10, 20.
The composite numbers up to 20 are 4,6,8,9,12,14,15,16,18 and 20.
Not all numbers between 20 and 28 are composite numbers. 23 is a prime number.
The composite numbers that are between 1 and 20 inclusive are: 4 6 8 9 10 12 14 15 16 18 20 This is a total of eleven composite numbers equal to 20 and below.
The composite numbers between 10 and 20 are 12, 14, 15, 16 and 18.
There are 3 composite numbers between 20 and 25. They are 21, 22, and 24.
The composite numbers that are between 1 and 20 inclusive are: 4 6 8 9 10 12 14 15 16 18 20 This is a total of eleven composite numbers equal to 20 and below.
no 5 is not a composite number 10 15 20 and 25 are composite
There are 7 composite numbers from 10 to 20 (including the boundaries):10, 12, 14, 15, 16, 18 and 20
The composite numbers between 20 and 30 are: 20 21 22 24 25 26 27 28 30
The composite numbers from 2 to 20 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, and 20.
26
The composite numbers between 20 and 30 are 21, 22, 24, 25, 26, 27, and 28.