Originally Posted by A9ofHearts
You have 5d 7d
the flop is 4d 10d Qh
So there are 47 unseen cards (52 minus your two hole cards and the three flop cards)
take that number and deduct your outs (13 diamond cards minus the two in your hand and the two on the table which is 9)
you should then have 38, take that and divide it by your number of outs (9)
and you will have your chance of catching your card on the turn (1 in 4.2) divide that by 2 and you have your approximate chance of hitting one of your cards on either the turn or the river (1 in 2)
After you do this for awhile you will memorize most of these figures and you will usually have your numbers without even thinking about it.
I hope this helps and if anyone sees someplace where my figures don't line up please post and tell me where I'm wrong


Shouldn't it be 9/47? (9 diamond outs...out of 47 cards left)
Then you count this possibility twice for the river and turn.
This gives 9/47 + 9/47 = 38% odds of hitting flush in the next 2 cards.
But, for the other part, let's do a pot equity calculation.
Pot odds = Call amount / Pot + call amount
9/47 is 19% chance of hitting flush on the next card.
So, if the pot is $100 and the raise is $10.
Pot odds = 10 / 120 = 8.3%
Since Pot Equity > Pot Odds, you will call the $10 raise.
Is that right?