What is the likelihood that the total of two dice rolls results in either a 5 or an 8?

Answer Choices

Correct answer marked below

1/12

1/9

1/4

Correct

5/18

7/18

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Explanation

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Official Explanation

Official

To find the probability that the sum of two dice rolls equals 5 or 8, we first count the cases for each sum. The combinations that yield a sum of 5 are: 14, 23, 32, 41, 50, which gives us 4 cases. The combinations that yield a sum of 8…

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Comments

DianaJul 26, 2024

this helped me

VritiAug 20, 2024

thanks!

What this question tests

What it tests

Your ability to compute probabilities of single and compound events, including 'at least one' questions.

Common trap

Forgetting to use the complement for 'at least one', or treating dependent events as independent.