Every whole number is unique: no two whole numbers are the same!
Every number is a unique number.
unique number: The number 1 has only one factor. (It is therefore unique.)
Every number is unique, because if any number weren't unique, it would be exactly the same as another number, so the number that wasn't unique was just another way to write a different number.
Probably some kind of "unique ID" (unique identification) number.
The number one has the unique property of multiplicative identity: any number times 1 is the same number.
Yes. Every citizen has their own unique number to identify them.
Every whole number is unique: no two whole numbers are the same!
Yes, 1 is unique because it is considered neither prime or composite.
yes, it is unique for the same city or state.
18. The sum of its digits is 9. And yes, it is unique.
Yes, every real number has a unique cube root.
Each element has a unique number of protons. If another atom has the same number of protons as that element, it is the same element.