With only a month, I'd bet it on black. It'd probably be the highest probability of doubling up in that short a time period with no personal effort. With some

With only a month, I'd bet it on black. It'd probably be the highest probability of doubling up in that short a time period with no personal effort. With some personal effort, there a few ways of making 25k in a month. App building projects are very hot right now, you could outsource app building projects and manage their completion. Could you make 25k more in a month, maybe not in the first month. But after you had solid relationships and skilled developers as well as a smooth input project buffer you could conceivably generate 25k profit a month.