Probability w/ cards (five cards of same suit)

[Guest]

If you are dealt five cards from a regular 52-card deck, what is the probability of getting all five cards of the same suit.
~No jokers in the deck.

 

[pka]

\(\displaystyle \L \frac{{4\left( {13 \choose 5} \right)}}{ {{52 \choose 5}}\).

Now why the 4?

 

[Guest]

\(\displaystyle \L \frac{{4\left( {13 \choose 5} \right)}}{ {{52 \choose 5}}\).

Now why the 4?

The four is b/c there are four suits...then did you use the nCr

 

[pka]

Correct! WAY TO GO.

 

[Guest]

when i calculated it the answer was like .001 is that right?

 

[JakeD]

when i calculated it the answer was like .001 is that right?

A book on gambling I have says the probability is .0020 from the same formula.