ShmoopTube

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Getting shmoopy with it.

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What is the probability of rolling two dice where the sum of the two is greater than or equal to 8?

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And here are the potential answers…

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The easiest way to solve this problem is to create a table of values

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that shows what values are possible to roll when rolling two dice.

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On each side of the table of values, we’ll show the roll of an individual die.

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Then, we’ll fill in the inside with the sum of the two rolls.

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Now, we’ll look at the table, and count the outcomes that are greater than or equal to 8.

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There are 5 ways to roll 8, 4 ways to roll 9, 3 ways to roll 10, 2 ways to roll 11, and

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1 way to roll 12. That's it. We add up all of these numbers, and get the

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number of ways we can roll a number greater than or equal to 8. That comes out to be 15.

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Remember that probability is equal to the favorable over the possible.

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In this case our favorable outcome is a roll whose sum is greater than or equal to 8.

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We’ve found that it is equal to 15.

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The possible choices are 36, as there are 36 different combinations of two dice.

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Our probability is 15 over 36 which is about 41.6% and the answer is (C).

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As in, “Crapping out.”

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