No, that is not true.
If it's a whole-number "multiple" and the number itself is positive, then the multiple is always greater than the number itself.
Greater than or equal to, yes. 10 is a multiple of 10.
You need at least two numbers to find an LCM. The lowest multiple of any positive number is the number itself.
Not necessarily. A number is also a multiple of itself.
The common multiple refers to a multiple that is COMMON to two or more numbers. You have only one number in the question! The "common" multiple of a number is itself.
There is NO greatest common multiple because I can always add another lowest common multiple and get an ever greater number that is a common multiple.
The LCM is the greater number.
No, for any number n greater than zero, the LCM of n and n is n.
The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question! The least multiple of a number is itself.