No offense, but you absolutely DO NOT discount 2 outs as you mentioned. I'm assuming that (for a flush), you are talking about having a four flush on the flop and want to know the probability of making at least a 5 card flush by the river. All you know is that you have 47 unseen cards and that there are 9 of the flush suit somewhere, but you DO NOT assume that they are in someone's hand.
For a good discussion on the flush question, please see my similar question and some great responses at:
Flush odds and Suited Board Odds