Any number of the form 14*k where k is an integer.
14
28
LCM: 42
The LCM of consecutive integers is their product. Consecutive integers will not both be multiples of seven.
420
None. The LCM (least common multiple) is the smallest positive whole number exactly divisible by two or more wholenumbers.
Any multiple of 28.
A common multiple
5 and 12
The Least Common Multiple (LCM) of (7,9,10) is 630.
Multiply any two numbers together. Their product will be a common multiple of the two.
Never. The greatest common multiple of any two numbers is infinite.