29 is prime, all the others in the list are composite.
9 and 15 only.
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 7 composite numbers from 10 to 20 (including the boundaries):10, 12, 14, 15, 16, 18 and 20
4,6,8,9,10,12,14,15,16,18 :)
Not all numbers between 20 and 28 are composite numbers. 23 is a prime number.
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The composite numbers up to 20 are 4,6,8,9,12,14,15,16,18 and 20.
10,12,14,15,16,18, and 20 dumbshit
The composite numbers between 20 and 30 are 21, 22, 24, 25, 26, 27, and 28.
29 is prime, all the others in the list are composite.
All of them except for 23 and 29 which are prime numbers.
All of them except 23 and 29 which are prime numbers
4, 10, 20, 25, 50, 100 are the composite factors of 100.
Yes. 120/20 = 6 All three numbers are composites.
9 and 15 only.