You need at least two numbers to find something in common, but I'll save you the trouble. The least common factor of any set of positive numbers is 1.
The least common multiples of the number 6 and 9 is 3.
The Least Common Multiple (LCM) for 5 6 is 30.
because its the least common number that goes into 6 and 10
The least common multiple of the numbers 6 and 10 is 30.
6 is less than 21. Out of that set, 6 is the least number. The least common multiple of 6 and 21 is 42.
The least common factor is: 1
That is impossible to answer, because you would have to have another number and 6 to find a least COMMON multiple.
30
60
The LCM is 18.
It is: 18
There is no such thing as a common multiple of one number.