What is the probability of rolling a 4 on a die twice?
The probability of rolling a specific number twice in a row is indeed 1/36, because you have a 1/6 chance of getting that number on each of two rolls (1/6 x 1/6).
What is the probability of rolling a 5 then an even number?
The probability of rolling a 5 on the first roll is 1/6. (There are 6 numbers and we’re trying to get 1). The probability of rolling an even number is 1/2.
What is the probability that the first roll is a 1?
1 Expert Answer The probability of a 1 on one roll is 1/6 and the probability of an even number on the second roll is 3/6 = 1/2. Since each roll is an independent event, the probability of a 1 on one roll and an even number on the second roll is 1/6 * 1/2 = 1/12.
What is the probability when rolling the dice twice of rolling a 3 and a 4?
1/18 of rolling both 3 and 4 on the second roll (having rolled neither in the first).
What is the probability of rolling an even number and then rolling a 5 on a pair of dice?
2 Answers By Expert Tutors Therefore P(even, then 5 totals, rolling the pair two consecutive times) = (1/2)(1/9) = 1/18.
What is the probability of rolling an even number?
The probability of rolling an even number is three out of six, or three-sixths. This fraction can be simplified as the numerator and denominator are both divisible by three. Three divided by three is equal to one, and six divided by three is equal to two. This means that the answer, in its simplest form, is one-half.
What is the probability of rolling a 1 then an even number?
So there is a 1/6 chance of getting a 1 on the first die. Then there is a 3/6=1/2 chance of getting an even number on the second roll.
What is the probability that a roll includes a 2?
Two (6-sided) dice roll probability table
| Roll a… | Probability |
|---|---|
| 2 | 1/36 (2.778\%) |
| 3 | 2/36 (5.556\%) |
| 4 | 3/36 (8.333\%) |
| 5 | 4/36 (11.111\%) |
What is the probability of rolling doubles twice?
Assuming fair 6 sided dice pairs, the probability of rolling doubles once is 1/6, so the probability of rolling doubles twice is 1/36.
How do you find the probability of rolling a single die?
The probability of rolling the same value on each die – while the chance of getting a particular value on a single die is p, we only need to multiply this probability by itself as many times as the number of dice. In other words, the probability P equals p to the power n, or P = pⁿ = (1/s)ⁿ.
What is the probability of getting 7 on a 10-sided die?
There is a simple relationship – p = 1/s, so the probability of getting 7 on a 10 sided die is twice that of on a 20 sided die. The probability of rolling the same value on each die – while the chance of getting a particular value on a single die is p, we only need to multiply this probability by itself as many times as the number of dice.
What is the probability of Rolling X to the same value?
The probability of rolling at least X same values (equal to y) out of the set – the problem is very similar to the prior one, but this time the outcome is the sum of the probabilities for X=2,3,4,5,6,7. Moving to the numbers, we have: P = P (X=2) + P (X=3) + P (X=4) + P (X=5) + P (X=6) + P (X=7) = 0.11006 = 11.006\%.
What is the probability of rolling a 15 on a dice?
If we consider three 20 sided dice, the chance of rolling 15 on each of them is: P = (1/20)³ = 0.000125 (or P = 1.25·10⁻⁴ in scientific notation). And if you are intereseted in rolling the set of any identical values, simply multiply the result by the total die faces: P = 0.000125 * 20 = 0.0025.