Two (6sided) dice roll probability table
Roll a…  Probability 

9  4/36 (11.111%) 
10  3/36 (8.333%) 
11  2/36 (5.556%) 
12  1/36 (2.778%) 
How to calculate D20 odds?
 Simple probability is found by counting all the ways to meet requirements and dividing by a count of all possible ways.
 So the chance of rolling a 20 on a d20, which is a die with 20 faces, one of which is numbered 20, are 1/20.
What are the odds of rolling 10 of the same dice?
To answer your first question: The probability that ten sixsided dice land with the same number is equal to the probability that nine of the sixsided dice have the same number as the tenth i.e. 1/69.
What is the most common roll on a D20?
Statistically, while the average D20 roll is 10.5, rolling with advantage or disadvantage shifts this average. An advantage roll averages at 13.9, while a disadvantage roll averages at 7.1.
What is the probability of rolling more than 10 with two dice?
(4,6) (5,5) (5,6) (6,4) (6,5) (6,6). So the probability of obtaining a total greater than or equal to 10 is 6/36 = 1/6.
What are the odds of rolling a 20 with 3 rolls?
The chance of 3 such rolls is 0.95 x 0.95 x 0.95 = 0.857. So there is an 85.7% chance of zero rolls of 20. And so a 14.3% chance of at least one roll of 20.
What is the probability of rolling a 3 with a die?
Onesixth
The event we're interested in is the score being a three. There is only one three on the die, so there is only one successful outcome. So, by dividing the number of successful outcomes by the total number of outcomes, we find that the probability of rolling a three on a regular sixsided die is onesixth.
Frequently Asked Questions
What are the odds of rolling 3 1s in a row on a d20?
Hence, the probability of getting 1 three times in a row is 0.463%.
What are the odds of rolling a 1 on a D20?
Answer: To figure this out, start with the odds of rolling a 1 on a single D20 throw: 1 in 20 or 5%. To find the odds of this happening four times in a row, multiply the individual probabilities: (1/20) x (1/20) x (1/20) x (1/20) = 1/160,000.
What is the percentage of rolling a 1 on a dice?
Probability of rolling a certain number or less with one die
Roll a…or less  Probability 

1  1/6 (16.667%) 
2  2/6 (33.333%) 
3  3/6 (50.000%) 
4  4/6 (66.667%) 
What is the most common roll on the D20?
10.5
Statistically, while the average D20 roll is 10.5, rolling with advantage or disadvantage shifts this average. An advantage roll averages at 13.9, while a disadvantage roll averages at 7.1.
What are the odds of rolling the same number 4 times on a D20?
To find the odds of this happening four times in a row, multiply the individual probabilities: (1/20) x (1/20) x (1/20) x (1/20) = 1/160,000. So, the odds of rolling a 1 on a D20 four times consecutively is 1 in 160,000.
What is the chance of rolling 15 or higher on d20?
15 or higher? It's trivial to see that for a single roll of a d20, there's a 1420 chance that it's 7 or higher, and a 620 chance that it's 15 or higher. So that means there's a (1420)3=0.343 chance that all three are 7 or higher, and a (620)3=0.027 chance that all three or 15 or higher.
FAQ
 What are the odds of hitting a 20 on a D20?
 For d = 20, i.e., a 20sided die, the probability of obtaining any specific outcome is 1 20 or . 05. If n = 2 dice are rolled, the probability of obtaining at least one 20 is 39 400 or . 0975.
 What is the probability of rolling a 21 with 4 dice?
 1 Answer. There are 12, not 6 ways to get a permutation of 6,6,5,4. You can choose the position of the 5 in 4 ways, then choose the position of the 4 in 3 ways. This gives us 4+12+4=20 ways to get a total of 21, and 4+6=10 ways to get a total of 22, and so we conclude that rolling a 21 is twice as likely.
 What are the odds of rolling a 20 on a D20 with advantage?
 When you have advantage, to not get a 20, you have to not roll a 20 twice. The probability of getting a 20 is (1  the proability of not getting a 20 twice), and as you can see below, is almost 10%.
 What are the odds of rolling a 6 on a dice?
 A 1/6 chance There's a 1/6 chance of rolling six on a dice.
 What is the probability of rolling more than 6 with two dice?
 Of those 36 possibilities, 21 are more than 6. So the probability that the sum of two dice being more than 6 is 21/36, or . 58333333.
 What are the odds in favor of rolling a 5 or 6?
 Summary: Using a sixsided die, the probability of rolling either a 5 or a 6 is 1/3.
What are the odds of rolling above 10 on a d20
What are the odds of rolling a 20 and a 1?  The chance of rolling a one and a 20 is 1400. This is actually the same probability as any particular combination of those two dice. For example, rolling a 3 and a 16 would also be a 1400 probability.  
What are the odds of rolling 2 NAT 20s at the same time?  While the odds of rolling a 20, after you've rolled the first 20, aren't affected by the outcome of the first role, it's still correct to say that the odds of rolling two of any particular number in a row are 1/400.  
What are the odds of rolling the same number on two 20 sided dice?  Therefore, the probability that the two numbers will be different from each other is: 20/20 x 19/20 ==380 / 400 ==95%. But, we want the opposite of that and we get that by subtracting 95% from 1. So, 1  95% ==5% probability that the two dice will show the same number.  
What is the probability of rolling a 20 on a d20?  If rolling a d20 has a 5% chance of rolling 20, and 2d20s have a 10%, why do 20d20 not have a 100% chance?  
What odds are 1 in 20?  0.05 5.0%
Number Converter

 What are the odds of rolling 3 1s on a D20?
 Probability of getting 1 three times in a row = (1/6) × (1/6) × (1/6) = 1/216. Hence, the probability of getting 1 three times in a row is 0.463%.
 What are the odds of rolling triples?
 1/36 Now, what is the total number of outcomes? 6x6x6 = 216. Therefore, the probability of a triple is 6/216 = 1/36.
 What are the odds of rolling a 20 three times in a row?
 Assuming that the dice is fair and that the rolls are independent, which is what one would expect, the probabilities multiply. So the probability is indeed (1/20)3=1/8000.
 What are the odds of getting a 20 sided dice?
 For d = 20, i.e., a 20sided die, the probability of obtaining any specific outcome is 1 20 or . 05. If n = 2 dice are rolled, the probability of obtaining at least one 20 is 39 400 or . 0975.
 What are the odds of rolling 4 ones in a row on a d20?
 1 in 160,000 (1/20) x (1/20) x (1/20) x (1/20) = 1/160,000. So, the odds of rolling a 1 on a D20 four times consecutively is 1 in 160,000.