Can MS be done with full scholarship?
I did an MS in math.  My tuition was waived and I received a stipend that was enough for me to live on (albeit very cheaply).  In return for this I taught one class of either business math or college algebra every semester I was there.  I think everyone that was there with me at the same time was on the same deal.

It shouldn't be hard to get this information from the school or schools of your choice.  If they have a program like this they probably recruit for it.

This might be different from what you are asking, since it more or less involves working for the money, but for anyone that needs a way to pay for a Master's degree, this is definitely a way to explore.  I can't say how common an arrangement like this would be outside of mathematics, however.

You should contact the school(s) you are considering attending and find out what kind of arrangements are made there.