All of them except for 11, 13, 17 and 19 which are prime numbers
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A composite number is a positive integer greater than 1 that has more than two factors. Between 10 and 20, the composite numbers are 12, 14, 15, 16, 18, and 20. These numbers can be divided evenly by factors other than 1 and themselves, making them composite.
the composite number is 23
composite numbers between 0-20: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18
The composite numbers between 10 and 20 are 12, 14, 15, 16 and 18.
the composite number is 23
12,14,15,16, and 18