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Questions tagged [dice]

For questions on dice, small throwable objects with multiple resting positions, used for generating random numbers.

Traditionally, dice are cubes, with each of its six faces showing a different number from 1 to 6. When thrown or rolled, the die comes to rest showing on its upper surface a random integer from one to six, each value being equally likely.

A variety of similar devices are also described as dice; such specialized dice may have polyhedral or irregular shapes and may have faces marked with symbols instead of numbers. They may be used to produce results other than one through six.

Loaded dice are designed to favor some results over others for purposes of cheating or amusement.

2073 questions
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Is it possible to create a completely random integer between 1 and 13 using standard dice in a D&D dice kit?

I am asking if it is possible to choose a random integer using a certain set of dice. Assume for these calculations that the dice are perfectly randomly distributed. There are 7 dice in a set, with the following possible outcomes for each dice: 2,…
Sam Weaver
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How to replace 8-sided dice with other dice

The exact question is: You need an 8-sided die for a game. You only have a coin, two four-sided and one 10-sided dice. How can you replace the 8-sided die? Re-rolls are not allowed. There are several solutions to this I've been told, I found one,…
Volkan Ulukut
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Deduce dice configuration knowing 2 adjacent faces

Let's say I have a die. I know it's up face and right face. I'd like to know what's on other faces, in this configuration. I know the dice configuration: 0 3 1 2 5 where $1$ is on the front face and $4$ is at the back (not visible). On $2$…
kaspersky
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Given two dice, what's the probability that land on the last spot on the board?

So me and my colleagues are discussing board games and we land on the subject of the Danish "Matador" (Monopoly) and on that board there are 40 spaces. You start on Space 1 and are given two dice to make it around the board. The dice are standard…
OmniOwl
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Probability of winning a dice roll when the two players have difference die sizes

Say for a moment two people each have a single die. One has $m$ sides while the other has $n$ sides. Assuming the dice are each fair (as in, each die has an equal chance to roll any side... obviously if $m > n$ it doesn't seem fair!) how can I…
corsiKa
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Calculating Probability of results of 3 12-sided dice (*not* finding probabilities of sums)

I have a complicated bit of probability calculating I don't have the math for: There are three dice with 12 sides each. Only one of the dice will be used as the "result" die. There are three different ways to determine which die to use: 1: "Omit…
Paul DK
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dice roll of 20

what formula would be correct to find the odds of rolling 2 dice "X" number of times without a seven showing. There are 36 combinations when rolling 2 dice with six sides. Im wondering how often one could roll 20 times. One person suggested…
jDubb
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What is the average roll on dice while re-rolling a result of 1

The average roll on a six sided die (d6) is 3.5. If the result is a 1 you are allowed a single re-roll accepting the second result. What does the average roll increase to? And how to calculate this? Similarly the average roll on 2d6 is 7. If the…
ian432
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Probability number comes up and then comes up again before another number

I was trying to follow the logic in a similar question (Probability number comes up before another), but I can't seem to get it to work out. Some craps games have a Repeater bet. You can bet on rolling aces twice before rolling a 7, rolling 3 three…
shao.lo
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Throw X dice, sum face $1,2,3,4$ minus Y, then add $ 5,6$ formula

I am trying to program something to find out the probability of all sum possible when I throw $X$ dice, sum all the face showing $1,2,3,4$ then I minus $Y$ from that sum (with a minimum of $0$, no negative), then I add the sum of face showing…
Wildhorn
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Reroll 2 dice sum probability

My statistics are very far in my memory and I am not a math guru so I do not understand half of fuzy symbols used in most post that could have the answer I am looking for. So I would ask for a very simple and easy to understand answer pretty please…
Wildhorn
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12 sided dice probability question

I need help with determining the probabilities of rolling four 12-sided dice: Red, White, Blue, and Yellow. I tried to program a simulation in BASIC on Windows, and the language on Windows 10 isn't like my old and long-gone Atari 800XL, so I cannot…
Dennis Justice
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Can you please explain whether this game is a game with multiple events?

There's a game where there are two dices distributed to each player. The player that rolls a higher number than the other wins the game. My teacher tells me that this game is not a game with multiple events. Can you please explain if this is true or…
Woojin Rho
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Rolling an 11+ on 3d6

I roll three d6, discard the lowest, and need an 11 or 12. I may also reroll one of the dice. I calculated the probability of rolling an 11+ on 2d6 as .056, and with a reroll as .102. Where I get hung up is being able to discard the third…
Elric Greywolf
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throwing a two-dice 7 with in total 6 dice

We have been stuck on the following questions regarding the game Qwixx: What is the probability that there is a combination of two dice which add up to exactly 7 when throwing with a total of 6 dice once? Thank you in advance!
Anonymous
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