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All possible outcomes: 2,3,4,5,6,7,8,9,10,11,12

All possible outcomes that are prime: 2,3,5,7,11

All possible rolls that are one of these prime numbers:

--1-2-3-4-5-6

1.*.*....*....*

2.*....*....*...

3....*....*......

4.*....*.........

5....*..........*

6.*..........*...

So we count 15 possible ways to make a Prime number.

P = (# of correct outcomes) / (# of total possible outcomes)

P = 15 / (6*6) = 0.416667 or 5/12

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Related Questions

What is the probability of two prime numbers when rolling two dice?

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.


What is the probability of not rolling prime numbers on both dice?

It is 1/4.


What is the probability of rolling two numbers whose sum is 2 equal?

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.


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If the numbers are 1 to 6, there are three prime numbers in that range, a probability of 50%.


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50% 1/2 0.5


What is the probability of rolling 2 dice whose sum is less than 5?

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The probability is 1 out of two. The primes you can roll are 2,3, and 5.


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The probability is 5/12.


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When rolling a pair of dice what is the probability of rolling two?

The probability is 1/36.


What is the probability of rolling a seven on a dice?

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