45789
3 composite numbers, 21, 22, and 24, are greater than 20 but less than 25.
Composite numbers less than 70 and greater than 60 are 62, 63, 64, 65, 66, 68 and 69.
The composite numbers less than 20 are: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18
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.
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.)
The sum of the composite numbers that are less than 8 is: 4+6 = 10
composite numbers are less than 12: 4, 6, 8, 9, 10
For this type of question, you should search the Internet for a list of prime numbers. All the integers that are not prime numbers are composite. In this case, the relevant prime numbers are 101 and 103.
There are 15 composite numbers greater than 50 but less than 70
9 and 15 are the only two odd composite numbers less than twenty.
They are: 4 6 8 9 10 12 and 14
The composite numbers greater than 88 and less than 95 are: 90, 91, 92, 93, 94.(88 and 95 are themselves also composite.)
45789
3 composite numbers, 21, 22, and 24, are greater than 20 but less than 25.
There are 18 that are less than 30.
Composite numbers less than 70 and greater than 60 are 62, 63, 64, 65, 66, 68 and 69.