# Can a smaller black hole orbit a larger black hole? [closed]

Let's face it. Black holes are confusing, scary and awesome. They have defied our understanding of physics and astronomy and we still have no idea of their true nature. So can a smaller black hole orbit a larger one? Is this even possible (with our understanding of physics) and could we even be able to observe such majesty?

What are some of the statistics and maths that are required for this to even be possible?