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Math on low-roll wins vs blackjack...
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<blockquote data-quote="TwoSix" data-source="post: 9551197" data-attributes="member: 205"><p>I was a little confused at first, because the results didn't match my gut intuition. But if you plug it into a spreadsheet, and draw a little picture, it makes more sense.</p><p></p><p>Assuming A is success on a 15- (75% chance), and B is success on a 5- (25% chance).</p><p></p><p>A and B both fail 75 out of 400 combinations, or 3/16. Importantly, I'm assuming that "high wins" and "low wins" DOESN'T MATTER in this case, since both sides failed. Since "both fail" is the converse of "both succeed", but high/low doesn't matter, this means the portion of the odds where both succeed has a larger influence on the overall ratio of win vs losses than might initially be intuited.</p><p></p><p>A passes, B doesn't: 225/400, or 9/16</p><p>B passes, A doesn't: 25/400, or 1/16</p><p></p><p>This leaves the block from [1,1] to [15,5], 75 combinations, where both succeed. </p><p></p><p>5 are ties (the diagonal from [1,1] to [5,5]).</p><p></p><p>The remaining 20 combinations in the square from [1,1] to [5,5] are going to be divided evenly, 10 and 10, between A and B no matter which way the high/low rule is applied.</p><p></p><p>Where the high/low rule matters are the last 50 combination, the block from [6,1] to [15,5]. Since that block ONLY has values where A>B, then the high/low rule completely determines whether or not A or B wins the block. And those 50/400 combinations are what tilt the odds so much depending on whether or not you use "low roll wins" or "blackjack style".[ATTACH=full]391859[/ATTACH]</p></blockquote><p></p>
[QUOTE="TwoSix, post: 9551197, member: 205"] I was a little confused at first, because the results didn't match my gut intuition. But if you plug it into a spreadsheet, and draw a little picture, it makes more sense. Assuming A is success on a 15- (75% chance), and B is success on a 5- (25% chance). A and B both fail 75 out of 400 combinations, or 3/16. Importantly, I'm assuming that "high wins" and "low wins" DOESN'T MATTER in this case, since both sides failed. Since "both fail" is the converse of "both succeed", but high/low doesn't matter, this means the portion of the odds where both succeed has a larger influence on the overall ratio of win vs losses than might initially be intuited. A passes, B doesn't: 225/400, or 9/16 B passes, A doesn't: 25/400, or 1/16 This leaves the block from [1,1] to [15,5], 75 combinations, where both succeed. 5 are ties (the diagonal from [1,1] to [5,5]). The remaining 20 combinations in the square from [1,1] to [5,5] are going to be divided evenly, 10 and 10, between A and B no matter which way the high/low rule is applied. Where the high/low rule matters are the last 50 combination, the block from [6,1] to [15,5]. Since that block ONLY has values where A>B, then the high/low rule completely determines whether or not A or B wins the block. And those 50/400 combinations are what tilt the odds so much depending on whether or not you use "low roll wins" or "blackjack style".[ATTACH=full]391859[/ATTACH] [/QUOTE]
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