February 27th, 2011 at 11:38:03 PM
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Ok smart guys time to make yourselves feel clever and me sound dumb. I have a little math question. I read the wizard of odds 3 card poker probablilty page..
I tried to work it out for myself, the odds of getting hands.
Heres my calculation for getting a pair..
52 cards
The first card that is dealt I think is irrelavant, you will get some kind of card that’s for sure.
So lets say we have the 5 of diamonds
The probablilty of getting another 5 of a different suit to make a pair on the second card is 3/51 and on the third card is 3/50(presuming we didn’t get one the first time) 0.58% + 0.6% = 1.18%
But according to the wizard of odds page, the probability of getting a pair is 16.94%
Please tell me why the wizard is right and I am wrong :(
thanks - please dont say becasue he's smart and im not..:/ i just genuinely cant work it out. I did do some basic statistics in maths with permutations and combinations and that but this calculation is WAY off and its making my head hurt.
I tried to work it out for myself, the odds of getting hands.
Heres my calculation for getting a pair..
52 cards
The first card that is dealt I think is irrelavant, you will get some kind of card that’s for sure.
So lets say we have the 5 of diamonds
The probablilty of getting another 5 of a different suit to make a pair on the second card is 3/51 and on the third card is 3/50(presuming we didn’t get one the first time) 0.58% + 0.6% = 1.18%
But according to the wizard of odds page, the probability of getting a pair is 16.94%
Please tell me why the wizard is right and I am wrong :(
thanks - please dont say becasue he's smart and im not..:/ i just genuinely cant work it out. I did do some basic statistics in maths with permutations and combinations and that but this calculation is WAY off and its making my head hurt.
February 28th, 2011 at 12:07:48 AM
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Consider these three cases to make a pair:
1) The second card is a 5, and the third card is not a 5: p1 = (3/51)(48/50) = 5.647%
2) The second card is not a 5, but the third card is a 5: p2 = (48/51)(3/50) = 5.647%
3) The second card is not a 5, but the third card is the same rank as the second card: p3 = (48/51)(3/50) = 5.647%
p1 + p2 + p3 = 16.94%
Also, the following will help you with your percentage calculations: 3/50 = 6/100 = 6% (not 0.6%)
1) The second card is a 5, and the third card is not a 5: p1 = (3/51)(48/50) = 5.647%
2) The second card is not a 5, but the third card is a 5: p2 = (48/51)(3/50) = 5.647%
3) The second card is not a 5, but the third card is the same rank as the second card: p3 = (48/51)(3/50) = 5.647%
p1 + p2 + p3 = 16.94%
Also, the following will help you with your percentage calculations: 3/50 = 6/100 = 6% (not 0.6%)