Assuming you mean the sum of the two dice is a Prime number, then:
The possible outcomes are 2, 3, 5, 7, 11 which occur 1, 2, 4, 7, 2 times respectively.
There are 36 possible outcomes
→ pr(prime_sum) = (1+2+4+7+2)/36 = 16/36 = 4/9
If you mean that both dice must show a prime number, then:
The possible primes are 2, 3, 5 → probability of 1 die showing a prime number is 3/6 = ½
→ probability both show a prime number is ½ × ½ = ¼
If you mean either or both dice could show a prime number, then:
The possible primes are 2, 3, 5 → probability of 1 die showing a primes is 3/6 = ½
→ probability of a die not showing a prime is 1 - ½ = ½
→ probability of neither die showing a prime is ½ × ½ = ¼
→ probability of either or both dice show a prime is 1 - ¼ = ¾
The probability of rolling two even numbers on two standard dice is 0.52, or 0.25.
The probability of rolling the same number on five dice is (1/6)4, or about 0.0007716.
There are 36 possible outcomes of rolling two dice.
The probability of rolling a sum of 11 with 2 dice is: P(11) = 1/18.For explanation see answer to question: "What is the probability of rolling 7 or 11 with 2 dice?".Read more: What_is_the_probability_of_rolling_7_or_11_with_2_dice
The probability of rolling a 7 with 2 dice is 6/36; probability of rolling an 11 is 2/36. Add the two together to find probability of rolling a 7 or 11 which is 8/36 or 2/9.
The probability of rolling two prime numbers on a standard pair of dice is 1 in 4, or 0.25. Take the probability of rolling a prime on one die, 3 in 6, or 1 in 2, or 0.5, and square it.
It is 1/4.
If the numbers are 1 to 6, there are three prime numbers in that range, a probability of 50%.
The probability of rolling two even numbers on two standard dice is 0.52, or 0.25.
The probability is 5/16 = 0.3125
The prime numbers from 1-6 are 2, 3, 5 (1 is not prime). There are 3 prime numbers on a dice and 6 total. therefore the probability of rolling a prime is 3/6. The probability of getting a tails when flipping a coin is 1/2. Therefore you just multiply the two. 3/6 * 1/2 = 1/4
50% 1/2 0.5
The probability is 1 out of two. The primes you can roll are 2,3, and 5.
The probability is 5/12.
The probability of rolling doubles with two dice is 1 in 6, or about 0.167.
There is always a 1 in 6 chance of rolling ANY number on a six-sided dice, as there are 6 numbers.
For 6 sided dice, there is only 1 way to get a 2: (1,1). There are 36 outcomes rolling 2 dice; so the probability of rolling two numbers whose sum is 2 is 1/36.