4-sided dice - Generate a four-sided die - D4

Here are a few details about how a virtual four-sided die is generated. While it relies on randomness, it is still governed by the laws of probability. It is based on an event with as many outcomes as the die has faces, here, 4.

From this we can easily say there's a one-in-four chance that the online die shows the result you want. But what about the average result of this 4-sided die? On any roll you have an equal chance of landing on each face, as seen above. Since the roll is purely random, the average works out to 2.5.

Of course, you can never actually roll a 2.5 on a die. Something else to keep in mind: each probability is independent, and every roll is independent of the others. One last thing, the four-sided die is often used in role-playing games, where it is the weakest of the dice, frequently rolled for an attack in RPGs.