Respuesta :

Hi! There are many things they might have in common. For example, they are all US Customary units. 

In addition, all these numbers are divisible by 3! 

I'm not sure what you're looking for besides that. Could you give more details?
irspow
They are all multiples of three, they are all rational, they are all integers, they are all real, and they are all one-dimensional magnitudes, etc, etc?