All of those numbers are composite.
Not all numbers between 20 and 28 are composite numbers. 23 is a prime number.
The composite numbers between 30 and 40 are 32, 33, 34, 35, 36, 38, and 39.
Apart from 2, all even numbers are composite. So the question is equivalent to all even numbers between 40 and 50. And these are ... ? 42, 44, 46 and 48.
I've found all the prime numbers...
All of those numbers are composite.
All even numbers between 50 and 80 are composite.
Not all numbers between 20 and 28 are composite numbers. 23 is a prime number.
Two: 1020 and 1080.
All numbers other than 11, 13 ,17, 19 ,23,29, 31 are composite numbers. eg 10,12,14,15, are composite numbers.
All of the whole numbers between 50 and 75 are composite numbers, except 53, 59, 61, 67, 71, and 73.
201,202,203,204,205,206,207,208,209
The composite numbers between 30 and 40 are 32, 33, 34, 35, 36, 38, and 39.
Apart from 2, all even numbers are composite. So the question is equivalent to all even numbers between 40 and 50. And these are ... ? 42, 44, 46 and 48.
All the integers between the two.
Not all composite numbers are even, but all even numbers except 2 are composite.
All except 37.