Not with negative numbers. -10 is a multiple of -2.
No, it is a factor. Multiples are always greater than the number itself, factors are smaller.
Eleven has no such factor.
As a general rule, multiples tend to be larger than factors. This is not always true. 9 is a factor of 27. 6 is a multiple of 3. The important distinction is in the relationship to the number they are factors or multiples of. A factor will be equal to or lesser than the number. A multiple will be equal to or greater than the number.
30
If it's a whole-number "multiple" and the number itself is positive,then the multiple is always greater than the number itself.
30
Never.
Greater than or equal to, yes. 10 is a multiple of 10.
The least common factor for two numbers is always one. The least common multiple for two numbers which have no common factors greater than one is their product.
No, not when negative numbers are involved. For example, -2 is a multiple of both -1 and 1 and is not greater than either.
No.
No.