Probability Question...

if you have T9o, what is the approximate chance of flopping two pair, trips, or a straight?

With flopping two pair I assume you mean by pairing both of your hole-cards. If that's the case, the chance is 4.673%. If you also count the chance of flopping a full house or a 4 of a kind it's 4.775%.

It should be right. I just added the different percentages listed here:
http://www.flopturnriver.com/phpBB2/...poker-9366.htm

thank you.

i think you added wrong, i got about 3.5%

oh wait add about 1% to flop a straight and that = 4.5%