Table of Contents
What is the probability of rolling a die and not getting a 1?
5/6
The probability of not rolling a 1 if you roll a dice once is 5/6.
What is the probability of rolling a 5 on a six sided die and then rolling a 2?
Two (6-sided) dice roll probability table
Roll a… | Probability |
---|---|
2 | 1/36 (2.778\%) |
3 | 3/36 (8.333\%) |
4 | 6/36 (16.667\%) |
5 | 10/36 (27.778\%) |
What is the probability of rolling a dice less than 5?
1/
Hence, P(values less than 5) = 4/6 = 2/3. To find the complement of rolling a number less than 5, we use the formula P’ = 1 – P, where P’ is the complement of P. = 1/3. Hence, the probability of the complement of rolling a number less than 5 by using a six-sided die is 1/3.
What is the probability of rolling a 5 on 1 6 sided die?
1/3
The formula to calculate the probability of an event is as follows. Given, a six-sided die is rolled once. We have to find the probability of rolling either a 5 or a 6. Therefore, the probability of rolling either a 5 or a 6 is 1/3.
What is the final probability of a roll of the die?
For example, let’s say we have a regular die and y = 3. We want to rolled value to be either 6, 5, 4, or 3. The variable p is then 4 * 1/6 = 2/3, and the final probability is P = (2/3)ⁿ.
What is the probability of rolling a 6 on the dice?
Now we subtract 1 to get the P ( 6 or even) Since the outcome that the dice rolls a 6 is included in the 2nd outcome that the dice rolls an even, the answer is the probability of the 2nd outcome, or an even roll on the dice. The probability of rolling just a 6 is 1 6 . The probability of rolling an even number is 1 2 .
What is the probability of rolling a 15 on each side?
In other words, the probability P equals p to the power n, or P = pⁿ = (1/s)ⁿ. 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 ).
What is the expected return on Rolling a $4/5$ or $6$?
Thus I have a $1/2$ chance of keeping a $4,5,6$, or a $1/2$ chance of rerolling. Rerolling has an expected return of $3.5$. As the $4,5,6$ are equally likely, rolling a $4,5$ or $6$ has expected return $5$.