All of them except for 83 and 89 which are prime numbers
70 and 90
83 and 89.
The prime numbers between 80 and 90 are 83 and 89.
63, 64
All of them except for 83 and 89 which are prime numbers
The only prime numbers between 81 and 90 is... 83
70 and 90
83 and 89.
Yes, the numbers from 90 to 96 are composite numbers.
Composite numbers between 89 and 97 are 90, 92, 93, 94, 95, 96.
The prime numbers between 80 and 90 are 83 and 89.
It is 83 because it is a prime number
63, 64
81, 82, 84, 85, 86, 87, 88. 80 and 90 are composite too
The odd numbers between 70 and 90 are 71, 73, 75, 77, 79, 81, 83, 85, 87, and 89. We know right away that 75 and 85 are composite, since they're divisible by 5. 81 is composite since it is the square of 9. 77 is obviously divisible by 11, so it, too, is composite. 87 is divisible by 3 since 8 + 7 = 15, which is divisible by 3. Therefore, and trust me, I double-checked the rest, 75, 77, 81, 85, and 87 are the composite, odd numbers between 70 and 90.
60 and 80 :D