I have no skin in this game - eviltoast
  • candybrie@lemmy.world
    link
    fedilink
    arrow-up
    1
    ·
    edit-2
    1 year ago

    To keep the same probabilities, you can only reduce and only to one that is a factor. E.g. d20 can be equivalent to d10, d5, d4 and d2.

    Multiplying the rolls messes things up. As an example, for d12 as a d6xd2 you have double the chance to roll 2, 4, and 6 and no chance to roll 7, 9, and 11.

    You could make the equation a little more complicated (6×(d2-1))+d6 to make it work.

    • Fushuan [he/him]@lemm.ee
      link
      fedilink
      English
      arrow-up
      1
      ·
      edit-2
      1 year ago

      You are absolutely right, I was thinking d6d2 as: the D2 rolls 1, it’s d6. The D2 rolls 2,its 6+d6. That’s not what my math said so my bad!

      Edit: your equation is what I had in my mind, which is sorta what we do to roll d100.