The sum of the composite numbers between 1 and 50 is 936.
Add them up. 40, 42, 44, 45, 46, 48, 49, 50
Including 40 and 50 there are 8 composite numbers because 41, 43 and 47 are prime numbers.
50
The composite numbers between 40 and 50 are 42, 44, 46, 48.
The composite numbers between 20 and 50 are: 20 21 22 24 25 26 27 28 30 32 33 34 35 36 38 39 40 42 44 45 46 48 49 50 The sum of these numbers is 834.
These are the composite numbers between 40 and 50: 42 45 46 48 49.
48, 49 and 50 are all composite.
40, 42, 44, 45, 46, 48, 49, 50
40, 42, 44, 45, 46, 48, 49, 50
40, 42, 44, 45, 46, 48, 49, 50.
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.