4, 6, 8, 9, 10, 12, 14, 15, 16, 18
40,38,36,35,32,28,27,25,24,21,20,18,16,15,14,12,10,9,8,6,4
The only even prime number is 2. All the rest of the even numbers are composite.
9 and 15
Not all composite numbers are even, but all even numbers except 2 are composite.
What is the sum of the composite numbers less than 10?4 + 6 + 8 + 9 = 27
This question is impossible to answer because there are six composite numbers in that range, not five!
The odd composite numbers lower than 30 are:9 15 21 25 27
Composite numbers greater than 20 and less than 30 are 21, 22, 24, 25, 26, 27, 28.
The 25 numbers from 26! + 2 to 26! + 26 are all composite. Thus, the 25 numbers from 403,291,461,126,605,635,584,000,002 to 403,291,461,126,605,635,584,000,026 are all composite.
49, 50, 51, 52, 54 and 55 are the composite numbers between 48 and 56.
All of them except 31 and 37 which are prime numbers
Search the Internet for a list of prime numbers - the Wikipedia article on prime numbers might list a few. All numbers between 2-100 that are not prime, are composite. (The number is not counted as prime, nor as composite.)