All even numbers between 50 and 80 are composite.
All numbers ending in 0,2,4,6 and 8 are even. Example: 20,22,24,26,28,30,32,34,36,38 etc,
Not all composite numbers are even, but all even numbers except 2 are composite.
50 and 52 are the even numbers in this range, the odd numbers will be all the others, which is just the number 51.
Every one of them has an even number of factors.
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.
The even numbers between 26 and 36 are 28, 30, 32, and 34.
All even numbers between 50 and 80 are composite.
List all the factors of each number. Which factors are prime factors between 20 and 28.
All even numbers are between odd numbers and so 0 is between -1 and 1 which makes it an even number.
The sum of all even numbers between 0 and 398 (2-396) is 157,212. If you include 398 the sum is 158,802.
All even numbers are composite, because 2 is a factor of every even number.
All numbers ending in 0,2,4,6 and 8 are even. Example: 20,22,24,26,28,30,32,34,36,38 etc,
500
501
All numbers greater than 2 are composites, not prime numbers.
All of the numbers between 5 and 45 are multiples, even if only of themselves.