31, 37, 41, 43, 47 are prime numbers from 30 to 50.
All even numbers other than 2 are composite, so the even composite numbers between 30 and 50 are 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, and 50.
31 ( they are : 4,6,9,10,12,14,15, 16,18,20,21,22,24,25,26,27, 28, 30, 32,33,34,35,36,38,40,42,44,45,46,48,49)
All even numbers are composite, because 2 is a factor of every even number.
33, 35, 39, 45, 49
There are 15 composite numbers greater than 50 but less than 70
31, 37, 41, 43, 47 are prime numbers from 30 to 50.
30,32,34,36,38,40,42,44,46,48, and 50.
All even numbers other than 2 are composite, so the even composite numbers between 30 and 50 are 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, and 50.
33,35,39,45,49
there are 16 numbers between 30 and 50. 30,32,33,34,35,36,38,39,40,42.44.45.46.48.49.50
31 ( they are : 4,6,9,10,12,14,15, 16,18,20,21,22,24,25,26,27, 28, 30, 32,33,34,35,36,38,40,42,44,45,46,48,49)
All even numbers are composite, because 2 is a factor of every even number.
33, 35, 39, 45, 49
30 50 70 because they both end in 0 and 10 is a composite number
Including 40 and 50 there are 8 composite numbers because 41, 43 and 47 are prime numbers.
prime: 31, 37, 41, 43, 47 composite: the others