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In "The Numbers Game," a state lottery, four numbers are drawn with replacement from an urn containing balls numbered \(0-9\), inclusive. Find the probability that a ticket holder has the indicated winning ticket. Three digits in exact order

Short Answer

Expert verified
The probability that a ticket holder has a winning ticket with three digits in the exact order is \(\frac{9}{2500}\).

Step by step solution

01

Calculate the total number of ways to choose the 4 digits

Since there are 4 numbers being drawn, each with 10 possible choices (0-9), and replacement is allowed, the total number of ways the 4 digits can be chosen is \(10^4\).
02

Calculate the winning ticket combinations with three digits in the exact order

For a winning ticket, we have to have three digits in the exact order. Now let's break it down by positioning those three matching digits: 1. The first, second, and third digits match: The fourth digit has the choice of the remaining 9 digits. So there are 9 ways. 2. The first, second, and fourth digits match: The third digit has the choice of the remaining 9 digits. So there are 9 ways. 3. The first, third, and fourth digits match: The second digit has the choice of the remaining 9 digits. So there are 9 ways. 4. The second, third, and fourth digits match: The first digit has the choice of the remaining 9 digits. So there are 9 ways.
03

Calculate the total number of winning ticket combinations

Adding up the number of ways to choose a winning ticket for each of the above cases, we have: Number of winning combinations = \(9 + 9 + 9 + 9 = 36\).
04

Calculate the probability of holding a winning ticket

To find the probability of holding a winning ticket, we need to divide the number of winning ticket combinations by the total number of ways to choose the 4 digits. Probability of holding a winning ticket = \(\frac{36}{10^4}\)
05

Simplify the probability

Now let's simplify the probability: \(\frac{36}{10^4} = \frac{36}{10000} = \frac{9}{2500}\) So, the probability that a ticket holder has a winning ticket with three digits in the exact order is \(\frac{9}{2500}\).

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Key Concepts

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

Combinatory Analysis
Combinatory analysis is the branch of mathematics that deals with counting and arranging objects. In our lottery example, it helps us calculate the total number of possible outcomes. When drawing numbers from an urn, each digit has 10 possible numbers (0-9), and since the drawing is with replacement, the probability remains the same for each draw. This is crucial because it allows us to use powers to determine the total possibilities. For four draws, each with ten options, the calculation of total combinations becomes relatively simple:
  • The total number of ways to choose all four digits is given by the product of the number of choices for each position. So, it's calculated as: \[10 \times 10 \times 10 \times 10 = 10^4 = 10000\]
Understanding this principle means you can apply similar analysis to other problems, such as selecting groups or winning numbers in different kinds of games.
Probability Calculation
Probability calculation involves finding how likely it is for a certain event to occur. In the context of lottery games, it entails dividing the number of favorable outcomes by the total number of possible outcomes. To find the probability of winning in our given lottery scenario, where three digits must be in exact order, we start with identifying all the possible winning combinations:
  • First, identify scenarios for matching positions, like the first three digits matching, leaving the fourth to be random.
  • Repeat similar logic for different combinations where three numbers hold the order.
This gives four specific cases with 9 choices for each, resulting in 36 favorable outcomes overall. Finally, we'll calculate the probability by dividing these 36 winning outcomes by the total possible combinations of 10000. So, we have:\[\frac{36}{10000} = \frac{9}{2500}\]By simplifying these numbers to their lowest terms, we find the chance of winning is \(\frac{9}{2500}\). Knowing such calculations helps determine your luck chance in various gambling games.
Mathematics Education
Mathematics education is integral to teaching concepts like combinatory analysis and probability calculation, and it emphasizes problem-solving skills that apply in real-world scenarios. Learning about probability games, such as lotteries, offers a practical approach to understanding abstract concepts. Engaging with these problems improves logical thinking and numeracy skills. Students can learn:
  • How to break down complex problems into manageable steps, like dividing the lottery draw problem into calculating possible combinations first, then favorable scenarios.
  • The importance of accuracy in defining conditions, such as what 'three digits in exact order' means.
By incorporating lottery examples into education material, educators encourage students to relate mathematics to familiar leisure activities, thereby making learning interesting and applicable. Such an approach demystifies mathematics, building confidence and competency along the way.

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