Math Problem Statement
Solution
To determine how many outcomes have a sum between 3 and 12 when rolling two dice, let's analyze the situation:
Each die can show a number from 1 to 6. The table given shows all 36 possible outcomes (since ). We need to count the number of pairs where the sum is between 3 and 12 inclusive. The minimum possible sum is 2 (when both dice show 1) and the maximum is 12 (when both dice show 6).
Step-by-Step Solution:
- Identify the Range: The problem asks for sums between 3 and 12. Note that every possible sum from rolling two dice is already within this range.
- Count Valid Outcomes: Since every possible outcome from the dice (ranging from to ) can produce a sum of 3 or more, we need to exclude only the outcomes where the sum is 2:
- The sum of 2 can only occur from the pair (1,1).
- Calculate: There are 36 total outcomes. Subtract the 1 outcome where the sum is 2.
Therefore, there are 35 different ways the sum can be between 3 and 12.
Would you like a more detailed explanation or have any questions?
Here are five related questions to deepen understanding:
- What is the probability of rolling a sum of 7 with two dice?
- How many outcomes result in an even sum when rolling two dice?
- What is the most common sum when rolling two dice, and why?
- If one die is fixed at 3, how many sums between 3 and 12 are possible?
- How would the total outcomes change if we used three dice instead of two?
Tip: When calculating probabilities with dice, always start by listing all possible outcomes; it helps in understanding patterns and probability distributions.
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Math Problem Analysis
Mathematical Concepts
Probability
Combinatorics
Formulas
Total possible outcomes = 6 × 6
Valid outcomes = Total outcomes - Invalid outcomes
Theorems
Counting Principle
Suitable Grade Level
Grades 6-8
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