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Message: <blockquote data-quote="Lonely Tylenol" data-source="post: 1916457" data-attributes="member: 18549">So why does standing near another guard make someone better at listening?  The benefit to multiple guards is primarily that if an alarm is raised, there is enough manpower to deal with the problem, as well as the benefit of being able to scan a larger area simultaneously.  If you want your guards to be able to hear a sneaky rogue nearby, you need to hire more skilled guards, or ward the place with Alarm spells.I agree with Auraseer--if they're just regular guards who don't know something's fishy, they'll be taking 10.  If theyre on alert, figure out what they need to roll to succeed and roll as many dice as you have guards.  If you clear the target number, they notice.Which means, for those for whom probability math is arcane, that the probability of succeeding on at least one would be equal to the 1-(the chance of failing on all of them).So if your chance of failure is 50%, for five checks the chance of failing on all of them would be 50%^5, or 1/32 (about 3%).  So the chance of succeeding on at least one is 97%.  If your chance of failure is 75%, the chance of succeeding on at least one of five tries is about 76%.  If the chance of failure is 80%, the chance of getting one is about 67%, etc.So, if you want to account statistically for multiple guards making multiple rolls, you just raise the probability of failure to the power of the number of guards, subtract from one, and that's your percent chance.  Not likely to map well to a d20, but you could roll percentile dice.</blockquote>

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