The statement is simply not true! For example, 6 is composite.
9 and 15 only
9 and 15 only.
no 5 is not a composite number 10 15 20 and 25 are composite
9 and 15 are the only two odd composite numbers less than twenty.
The composite numbers between 10 and 20 are 12, 14, 15, 16 and 18.
There are 7 composite numbers from 10 to 20 (including the boundaries):10, 12, 14, 15, 16, 18 and 20
The composite numbers from 2 to 20 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, and 20.
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.
Composite numbers between 6 and 20 are 8, 9, 10, 12, 14, 15, 16, and 18.
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.
number of composite numbers below 20: 10composite numbers below 20: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18
4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25 are the first 15 composite numbers