Technically speaking, you can.
But the thing is, that would be the dumbest investment that an investor can ever do. To not understand the thing that he or she is investing his or ger money at.
I believe that one should understand butcoins thoroughly to gain or maximize any profit. And i thnk that goes for every investment. Because without understanding of what you are doing, you cannot give your best. Which in return won't let you recieve what's best. So I suggest you study about bitcoins first if not the whole crypto world, so you know what you are getting yourself into and not have regrets in the future.