Dice

Description
Dice (singular: die) are multi-sided objects which use only the information on one of its sides at a given time. The most common is the six-sided die which has a number of pips (dots or indents) to indicate numbers from one through six on each of their faces. Dice used to add randomness are typically expected have an equal chance of resulting in each die facing. Some games do not roll the dice; instead using them to keep track of information.

A dice pool is a number of dice which are used together, often by rolling and taking a sum of the results.

Notation in Role Playing Games
Role playing games, particularly those using the D20 system such as Dungeons & Dragons, often use the following shorthand notation to indicate dice to roll, with the sum of the results of each dice added together added together as a final result of the roll."[how many to roll]D[of sides on that die]"Multiple types of dice may be combined by including the addition sign (+) between each different die type. A number may also be added to the total by using that number without the D notation.

For example, 2D6+1D8+3, means to roll 2 six-sided dice and 1 eight-sided die. The result is the sum ofthe results of those dice plus an additional 3.