4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20
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what is the ratio or prime numbers to composite numbers in this list/10,11,2,13,14,15,16,1,7,18,19,20,21
120 is a composite number because it is divisible by 2. Even numbers except 2 are composite.
The composite factors of 120 are 4, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
It is impossible to list the infinite number of prime numbers and composite numbers.
That's an infinite list.