What is considered a conservative Free Cash Flow (FCF) growth rate for established companies in DCF analysis?

What is the recommended approach to mitigate risks associated with the sensitivity of DCF analysis to the terminal growth rate?

According to the concept of 'Margin of Safety', when should an investor buy stocks?

What is the primary factor that should determine an investor's decision to sell a stock, according to the text?

What is the general consensus among renowned investors regarding the ideal number of stocks in a portfolio?