rudeboyoi
rudeboyoi
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May 9th, 2010 at 3:34:11 PM permalink
what are the chances of rolling two numbers:

greater than a 3
greater than a 4
greater than a 5
greater than a 6
greater than a 7

if you roll the same number during one of the rolls, its just a reroll. so if youre trying to roll two numbers greater than a 3 and you happen to roll a 3, you just reroll the dice as if it never happened.
miplet
miplet
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May 10th, 2010 at 6:35:26 AM permalink
Quote: rudeboyoi

what are the chances of rolling two numbers:

greater than a 3
greater than a 4
greater than a 5
greater than a 6
greater than a 7

if you roll the same number during one of the rolls, its just a reroll. so if youre trying to roll two numbers greater than a 3 and you happen to roll a 3, you just reroll the dice as if it never happened.


I'll assume you are rolling 2 dice twice.

3 = 94.204152249135 %
4 = 82.644628099174 %
5 = 66.015625 %
6 = 45.889698231009 %
7 = 25 %
8 = 10.405827263267 %
9 = 3.515625 %
10 = 0.8264462809917 %
11 = 0.0865051903114 %
“Man Babes” #AxelFabulous
rudeboyoi
rudeboyoi
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Joined: Mar 28, 2010
May 10th, 2010 at 6:47:07 AM permalink
thank you. thats what i was looking for.

now for a slightly more complex question.

what are the probabilities for rolling a number greater than what you rolled initially, then rolling a number less than what you rolled.

so if youre trying to roll a number greater than a 4, you have to roll a 5-12. then depending on what you rolled, lets say you rolled a 6, then you have to roll a number less than 6.

is there a quick way to go about this besides.

figuring out if you are trying to roll a number greater than a 4, p(5)*p(2 to 4) + p(6)*p(2 to 5) + p(7)*p(2-6)+... and so forth.
miplet
miplet
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May 10th, 2010 at 9:01:43 AM permalink
You may find this chart helpfull. It gives the exact number of ways to roll one number then another. For example there are 15 ways to roll a 6 then a 4. There are 1296 total ways to roll 2 pairs of dice.
roll2 3 4 5 6 7 8 9 10 11 12
2 1 2 3 4 5 6 5 4 3 2 1
3 2 4 6 8 10 12 10 8 6 4 2
4 3 6 9 12 15 18 15 12 9 6 3
5 4 8 12 16 20 24 20 16 12 8 4
6 5 10 15 20 25 30 25 20 15 10 5
7 6 12 18 24 30 36 30 24 18 12 6
8 5 10 15 20 25 30 25 20 15 10 5
9 4 8 12 16 20 24 20 16 12 8 4
10 3 6 9 12 15 18 15 12 9 6 3
11 2 4 6 8 10 12 10 8 6 4 2
12 1 2 3 4 5 6 5 4 3 2 1
“Man Babes” #AxelFabulous
rudeboyoi
rudeboyoi
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Joined: Mar 28, 2010
May 10th, 2010 at 9:05:22 AM permalink
thank you. this is extremely useful. id rather see it portrayed as combinations than probabilities anyways.
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