the product of two consicutive multiple of three integers
Yes.
six
6
Assuming you mean "divisible", yes it is. One dozen is twelve, so two dozen is twenty-four, which is a multiple of three. An easy way to test if a number is a multiple of three is by adding up the digits; if it gives you another multiple of three, you're dealing with a multiple of three (2 + 4 = 6, 6 is a multiple of three, so 24 is too)
4 is a multiple of three numbers.
270
63
The LCM is: 6
LCM: 42
6 is.
No, it's a common multiple.