Native American use of dice, probability predates currently known Old World dice by millenia

In total, archaeologist Robert Madden observed 659 sets of Native American dice from 57 archaeological sites across 12 different states.

Native Americans were gambling with dice 6,000 years earlier than anyone else, study says

Archaeological record suggests hunter gatherers were playing games of chance at the end of the last ice age ...
Ars Technica

Ice Age dice show early Native Americans may have understood probability

Native Americans have been playing with dice in games of chance for more than 12,000 years, according to a new paper published in the journal American Antiquity. And the oldest examples of Native ...

Jackpot! Archaeologists just found the world's oldest dice

They’re not the six-sided dice we’re familiar with now, but these ancient tools were crucial for rudimentary games of chance ...
Ars Technica

A probability question with lots of dice: how do I calculate this?

It's been a long time since I scraped through my probability and stats class in college... There is a time-killing dice game a friend (seems to have) invented: You start with a pool 10 6-sided ...