49, 48, 46, 45, 44, 42, 40, 39, 38, 36.
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3 composite numbers, 21, 22, and 24, are greater than 20 but less than 25.
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 less than 20 are: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18