SOLUTION: What is the probability of getting a sum of 20 when rolling three fair six-sided dice? (Express your answer in decimal form if your answer is not whole number.)

Question 1192888: What is the probability of getting a sum of 20 when rolling three fair six-sided dice? (Express your answer in decimal form if your answer is not whole number.)

Found 2 solutions by ikleyn, math_tutor2020:
Answer by ikleyn(52890)   (Show Source): You can put this solution on YOUR website!
.

                        D U P L I C A T E

I just answered this question under the link

https://www.algebra.com/algebra/homework/testmodule/testmodule.faq.question.1192883.html

Do not post it again.

Answer by math_tutor2020(3817)   (Show Source): You can put this solution on YOUR website!

Answer: 0

Reason:
The highest number you can get on a standard six sided die is "6".
Having three such copies added together will get us 6+6+6 = 18 which is two units short of the goal of 20.
Therefore, it is impossible to get a sum of 20 with three standard six sided dice.
The probability 0 indicates events that are impossible to occur.

You could reach 20 if you used non-standard dice, but I'll assume that your teacher is referring to standard dice.

RELATED QUESTIONS
What is the probability of getting a sum of 20 when rolling three fair six-sided... (answered by ikleyn)
A standard pair of six-sided dice is rolled. What is the probability of rolling a sum... (answered by ewatrrr)
What is the probability of getting an 11 when you roll two fair six-sided... (answered by bucky)
What is the probability of getting a "6" if I roll a fair six sided... (answered by deborabr)
what is the probability of rolling a some of seven with three six-sided dice... (answered by cordereal)
what is the probability of obtaining 3 ones in a row when rolling a fair, six-sided... (answered by Alan3354)
Three fair six-sided number cubes, each with faces labeled 0,2,4,6,8,10 are all rolled.... (answered by Fombitz,Boreal,KMST,MathTherapy)
when rolling a pair of dice, what is the probability of rolling the sum of six?... (answered by checkley77)
If you roll 16 dice, what is the probability of getting at least one six? Express your... (answered by stanbon)