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Probability of rolling dice not the same number

Teaching Transcript

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What is the chance of not rolling doubles

The chance of not rolling doubles is 100%, or 1, minus the chance of rolling doubles.

We know the chance of doubles is 1 out of 6. The first dice can be anything, and the second dice then has a 1 in 6 chance of being the same.

So the chance of not rolling doubles is 1 minus 1 over 6

So our probability is 5 out of 6 or 83%

This math skill teaches how to calculate the probability of not rolling doubles with two dice. The method involves subtracting the probability of rolling doubles from 100%. The probability of rolling doubles is found by setting the condition that the second die matches the first.

Skill Practice

Probability of rolling dice not the same number

Test your understanding of probability of rolling dice not the same number by practicing it! Work through the below exercises to use it in practice.