All the even numbers are divisible by 2.
There are 80 such numbers.
Yes. Test a couple numbers divisible by 9--27, 81--and they are all divisible by 3.
5, 7, a bunch of numbers that are odd are not divisible by 3. numbers that are divisible by three can have all their numbers added together and come out with a number that is divisible by 3.
No.
Numbers that are divisible by 80 are itself and any of its other multiples
All numbers are divisible by 1.
Yes; all numbers that are divisible by 9 are divisible by 3.
All of the even numbers are divisible by 2.
Yes and by any of its factors
All the even numbers are divisible by 2.
All whole numbers are divisible. If you mean divisible by numbers other than 1 and themselves, the answer is the set of composite numbers.
All even numbers are divisible by 2.
Two. All numbers are also divisible by 1.
All numbers that are divisible by 8 and 12 would also be divisible by 4.
101
All numbers divisible by 3 are NOT divisible by 9. As an example, 6, which is divisible by 3, is not divisible by 9. However, all numbers divisible by 9 are also divisible by 3 because 9 is divisible by 3.