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Message: <blockquote data-quote="Nifft" data-source="post: 4361052" data-attributes="member: 6562">Did this answer your question? It seems light on details.Basically, when you roll two dice and take the maximum value, you're allowing large values to cover small values, which slants the distribution towards the high end.Consider the case of max(2d20). You have 400 possible results, but if either die is a 20, the other die won't matter -- a roll of 20 "covers" all nineteen lesser values. This means there are 39/400 cases where the end result is 20, as opposed to 1/20 cases normally -- in percentage terms, you can expect max(2d20) to yield a 20 result 9.75% of the time, as opposed to 5% of the time.Now, 4d6 drop lowest is more complicated to visualize because there are more thingies to track, but the slanting works similarly.Cheers, -- N</blockquote>