Is 3 ETFs enough?

Is 3 ETFs enough for a diversified investment portfolio? Are these three ETFs covering a wide range of asset classes, including stocks, bonds, and commodities? Or are they too concentrated in a specific sector or region? How does the performance of these ETFs compare to the overall market? Should I consider adding more ETFs to further diversify my portfolio, or is 3 a reasonable number to start with? What are the risks associated with investing in ETFs, and how can I mitigate them? Is there a recommended maximum number of ETFs to hold in a portfolio, or does it depend on personal preferences and investment goals?