The answer is 11 turns.
4
Normally, at least three, but I can do it with two digits:27
2
There are 12 edges and 8 verticies on a cube.
That depends how you want to round it, for example, to the closest multiple of 1, of 10, of 100, etc. But if you allow real numbers, then no matter how you round, there is no least number that you can round to a certain number!
At least another number is needed for the LCM
2
At least another number is needed to find the LCM
no
At least another number is needed in order to find the LCD
At least another number is needed in order to find the LCM
8
18
At least two.
It depends which currency you are using.
Quorem
Three.