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Python - Probability - Dice rolls sum

# You roll together 5 fair, six-sided dices.


# 1. What is the probability that the sum of the five dices is equal to 19 ? 13.9%

# 2. What is the probability that the sum of the five dices is less or equal to 19 ? 69.5%

# 3. What is the probability that the sum of the five dices is more than 19 ? 30.5%



from itertools import product

from math import gcd

dieRolls=list(product(range(1, 7), repeat=5))

dieRolls


n1=sum(sum(rol)==19 for rol in dieRolls)

n2=sum(sum(rol)<=19 for rol in dieRolls)

n3=sum(sum(rol)>19 for rol in dieRolls)


d=len(dieRolls)


g1=gcd(n1, d)

g2=gcd(n2, d)

g3=gcd(n3, d)


n1

n2

n3


g1

g2

g3


d


n1/d

0.09452160493827161


n2/d

0.6948302469135802


n3/d

0.30516975308641975




Resources:


https://docs.python.org/3/library/itertools.html

https://www.examsbook.com/dice-problems-in-probability

https://campus.datacamp.com/courses/statistical-simulation-in-python/basics-of-randomness-simulation?ex=7

https://www.geeksforgeeks.org/probability-of-getting-a-sum-on-throwing-2-dices-n-times/

https://codereview.stackexchange.com/questions/212930/calculate-probability-of-dice-total

https://www2.karlin.mff.cuni.cz/~nagy/NMSA202/dice1.pdf

https://jvmora.wordpress.com/2018/07/19/dice-probabilities-i/

https://rosettacode.org/wiki/Dice_game_probabilities

https://www.quora.com/You-roll-five-fair-six-sided-dice-What-is-the-probability-that-the-sum-of-the-five-dice-is-20-How-would-I-run-this-in-R-or-Python

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