What are the probabilities of getting a "Straight flush" in a poker game? I'm not a pretty much fun of Poker, but I'd like to study that game.

What are the probabilities of getting a Straight flush in a Poker game considering this factors?



Number of playersHow are cards dealtWho is the first player
If you are dealt five cards, there are $4\times10 =40$ possible straight flushes ($4\times 9 =36$ if you exclude royal flushes) out of the ${52 \choose 5}= 2598960$ possible hands.  So the probability is $\dfrac{40}{2598960} = \dfrac{1}{64974} \approx 0.00001539\ldots$.

The probability will increase if you can have more than five cards to choose from.  The probability that somebody will have a straight flush will increase if the number of players increases.  It may reduce if you might drop out of the betting before seeing all five cards.
Try the book, mathematics of poker by bill chen. Decent read.