Instead of using the values {1,2,3,4,5,6} on dice, suppose a pair of dice have the following: {1,2,2,3,3,4} on one die and {1,3,4,5,6,8) on the other. Find the probability of rolling a sum of 12 with these dice. Be sure to reduce. 1 [?]

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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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### Probability Exercise

#### Problem Statement:
Instead of using the values {1,2,3,4,5,6} on dice, suppose a pair of dice have the following:
- First Die: {1, 2, 2, 3, 3, 4}
- Second Die: {1, 3, 4, 5, 6, 8}

Find the probability of rolling a sum of 12 with these dice. Be sure to reduce your answer.

#### Solution:
To determine the probability of rolling a sum of 12 with these dice, follow these steps:

1. **Identify all possible outcomes:**
   - Each die has 6 faces, so there are \(6 \times 6 = 36\) possible outcomes when rolling these two dice.

2. **Determine the combinations that result in a sum of 12:**
   - We need to find pairs \((x, y)\), where \(x\) comes from the first die and \(y\) comes from the second die such that \(x + y = 12\).
   - By inspecting the values:
     - The possible combination is (4, 8) since 4 from the first die and 8 from the second die adds up to 12.

3. **Count the favorable outcomes:**
   - The pair (4, 8) is the only combination that results in a sum of 12.
   - Since each die has exactly one face showing 4 and one face showing 8, this combination occurs exactly once.

4. **Calculate the probability:**
   - The probability \( P \) of rolling a sum of 12 is the number of favorable outcomes divided by the total number of possible outcomes.
   \[
   P = \frac{\text{Number of favorable outcomes}}{\text{Total number of possible outcomes}} = \frac{1}{36}
   \]

Therefore, the probability of rolling a sum of 12 with these dice is \( \frac{1}{36} \).
Transcribed Image Text:### Probability Exercise #### Problem Statement: Instead of using the values {1,2,3,4,5,6} on dice, suppose a pair of dice have the following: - First Die: {1, 2, 2, 3, 3, 4} - Second Die: {1, 3, 4, 5, 6, 8} Find the probability of rolling a sum of 12 with these dice. Be sure to reduce your answer. #### Solution: To determine the probability of rolling a sum of 12 with these dice, follow these steps: 1. **Identify all possible outcomes:** - Each die has 6 faces, so there are \(6 \times 6 = 36\) possible outcomes when rolling these two dice. 2. **Determine the combinations that result in a sum of 12:** - We need to find pairs \((x, y)\), where \(x\) comes from the first die and \(y\) comes from the second die such that \(x + y = 12\). - By inspecting the values: - The possible combination is (4, 8) since 4 from the first die and 8 from the second die adds up to 12. 3. **Count the favorable outcomes:** - The pair (4, 8) is the only combination that results in a sum of 12. - Since each die has exactly one face showing 4 and one face showing 8, this combination occurs exactly once. 4. **Calculate the probability:** - The probability \( P \) of rolling a sum of 12 is the number of favorable outcomes divided by the total number of possible outcomes. \[ P = \frac{\text{Number of favorable outcomes}}{\text{Total number of possible outcomes}} = \frac{1}{36} \] Therefore, the probability of rolling a sum of 12 with these dice is \( \frac{1}{36} \).
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