62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77 and 78.
60 and 80 :D
The composite numbers between 70 and 80 are 72, 74, 75, 76, 77 and 78.
It is 70
All even numbers between 50 and 80 are composite.
61, 67,71, 73, and 79 are the prime numbers between 60 and 80.
Any number except 61 67 71 73 and 79 which are prime numbers
The composite numbers between 50 and 80 are: 50, 51, 52, 54, 55, 56, 57, 58, 60 62, 63, 64, 65, 66, 68, 69, 70, 72 74, 75, 76, 77, 78, 80
They are the numbers that have more than two factors in them.
452
All of them except for 83 and 89 which are prime numbers
81, 82, 84, 85, 86, 87, 88. 80 and 90 are composite too
60 and 80