One of the problems with a d100 that I saw is that it can be rolled along an axis somewhat reliably.  If the numbers are well distributed, the average and those above&#x2F;below average may still be sufficient. Specific numbers would be avoided by putting them at the poles, or others given greater chance by putting them along the equator of the roll.<p>I have not seen the d120, I don&#x27;t know if the points would bounce it off its axis or not.