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91Ó°ÊÓ

Make a table which shows all the totals which are possible when two dice are rolled and the number of ways in which each total can occur.

Short Answer

Expert verified
There are 36 combinations, with totals ranging from 2 to 12 and specific counts for each total as detailed in the table.

Step by step solution

01

Understanding Dice Combinations

When two six-sided dice are rolled, each die can land on any number from 1 to 6. Thus, there are a total of 6 x 6 = 36 possible combinations of outcomes since each of the two dice can result in one of six outcomes.
02

Listing Possible Totals

The possible totals range from 2 (1+1) to 12 (6+6). We need to determine which combinations result in each total.
03

Calculating Number of Ways per Total

For each possible total, count how many combinations add up to that total: - Total 2: (1,1) = 1 way - Total 3: (1,2), (2,1) = 2 ways - Total 4: (1,3), (2,2), (3,1) = 3 ways - Total 5: (1,4), (2,3), (3,2), (4,1) = 4 ways - Total 6: (1,5), (2,4), (3,3), (4,2), (5,1) = 5 ways - Total 7: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1) = 6 ways - Total 8: (2,6), (3,5), (4,4), (5,3), (6,2) = 5 ways - Total 9: (3,6), (4,5), (5,4), (6,3) = 4 ways - Total 10: (4,6), (5,5), (6,4) = 3 ways - Total 11: (5,6), (6,5) = 2 ways - Total 12: (6,6) = 1 way.
04

Creating the Table

Construct a table with two columns: one for 'Total' and another for 'Number of Ways'. Fill in the table using the information from Step 3: | Total | Number of Ways | |-------|----------------| | 2 | 1 | | 3 | 2 | | 4 | 3 | | 5 | 4 | | 6 | 5 | | 7 | 6 | | 8 | 5 | | 9 | 4 | | 10 | 3 | | 11 | 2 | | 12 | 1 |

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Combinatorics
Combinatorics is a branch of mathematics that deals with counting, arrangement, and combination of objects. Essentially, it's about figuring out how many ways you can arrange or select items without necessarily considering the order. In the context of rolling dice, combinatorics helps us understand the various possible outcomes.

When you roll two dice, each die has 6 faces, and the number on each face ranges from 1 to 6. This gives us a total of 36 combinations because:
  • Each die has 6 faces.
  • There are 6 outcomes per die.
  • The total combinations are calculated as 6 x 6 = 36 outcomes.
Combinatorics is crucial here because it allows us to calculate these total possibilities efficiently, enabling us to predict outcomes and their probabilities accurately. Understanding combinatorics lays the groundwork for predicting the results in a structured, mathematical manner.
Dice Probability
Dice probability refers to the likelihood of a particular outcome occurring when dice are rolled. Probability is the measure of the chance that an event will occur as a fraction of the set of possible outcomes. When you roll two dice, you can obtain numbers ranging from 2 to 12 as these are the sums of the two numbers you roll on the dice.

Here's how we evaluate probability:
  • The smallest sum (2) can only be obtained by the combination (1,1).
  • The largest sum (12) occurs with the combination (6,6).
  • Between these extremes, the totals become more frequent as you approach the middle of the list (i.e., total 7), and then less frequent as you move further towards the other end.
The total number of ways each sum can occur differs due to the varying combinations. For example, the sum of 7 can be obtained in 6 different ways, which is the highest probability of any sum occurring. Understanding dice probabilities can help predict outcomes in games and other situations where dice are used.
Mathematical Tables
Mathematical tables serve as a valuable tool in organizing and presenting data clearly. They help make sense of complex numbers and allow for quick reference and calculations. In statistics and probability theory, tables are commonly used to display outcomes and their associated probabilities.

For the exercise involving two dice, a table is used to summarize the numbers that result from rolling the dice and the number of ways each sum can be achieved. For instance:
  • The table lists totals from 2 to 12.
  • For each total, the number of combinations resulting in that total is displayed.
  • This concisely shows the frequency of each result, making it easy to determine probabilities.
Using tables allows students and researchers to visualize data more concretely, simplifying analysis and helping in drawing conclusions effortlessly. In our dice example, the table method is straightforward yet comprehensive, offering an organized view of the possibilities when rolling two dice.

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