Calculating the Total Probability

Oct 13, 2025 by pinkandtrash.com 94 views

Probability Question with Deck of Cards: Three Players, 5 Cards Each, P(at least one person has exactly two aces)

In this article, we will explore a probability question involving a standard deck of 52 cards, with four aces. Three players are each dealt five cards randomly from the deck. We aim to find the probability that at least one person receives exactly two aces. This problem involves the use of combinatorics and probability theory to calculate the desired probability.

To begin, let's break down the problem and understand what is being asked. We have a standard deck of 52 cards, with four aces. Three players are each dealt five cards randomly from the deck. We want to find the probability that at least one person receives exactly two aces. This means that we are looking for the probability that one person has exactly two aces, and the other two players do not have any aces or have less than two aces.

To calculate the probability, we will use the concept of complementary probability. This means that we will first find the probability that no one has exactly two aces, and then subtract this probability from 1 to get the desired probability.

Step 1: Calculate the Probability that No One Has Exactly Two Aces

To calculate the probability that no one has exactly two aces, we need to consider the following cases:

Case 1: No one has any aces
Case 2: One person has exactly one ace, and the other two players do not have any aces
Case 3: One person has exactly two aces, and the other two players do not have any aces

We will calculate the probability of each case and then add them up to get the total probability.

Case 1: No One Has Any Aces

To calculate the probability that no one has any aces, we need to calculate the number of ways to choose 5 cards from the 48 non-ace cards, and then divide it by the total number of ways to choose 5 cards from the 52-card deck.

import math
num_ways_case_1 = math.comb(48, 5)
total_num_ways = math.comb(52, 5)
prob_case_1 = num_ways_case_1 / total_num_ways

Case 2: One Person Has Exactly One Ace, and the Other Two Players Do Not Have Any Aces

To calculate the probability that one person has exactly one ace, and the other two players do not have any aces, we need to calculate the number of ways to choose 1 ace from the 4 aces, 1 non-ace card from the 48 non-ace cards, and then choose 5 cards from the remaining 46 non-ace cards. We will then multiply this by the number of ways to choose 5 cards from the 48 non-ace cards for the other two players.

# Calculate the number of ways to choose 1 ace from the 4 aces
num_ways_ace = math.comb(4, 1)
num_ways_non_ace = math.comb(48, 1)
num_ways_remaining = math.comb(46, 5)
total_num_ways = math.comb(52, 5)
prob_case_2 = (num_ways_ace * num_ways_non_ace * num_ways_remaining * math.comb(48, 5)) / total_num_ways

Case 3: One Person Has Exactly Two Aces, and the Other Two Players Do Not Have Any Aces

To calculate the probability that one person has exactly two aces, and the other two players do not have any aces, we need to calculate the number of ways to choose 2 aces from the 4 aces, and then choose 3 non-ace cards from the 48 non-ace cards. We will then multiply this by the number of ways to choose 5 cards from the 48 non-ace cards for the other two players.

# Calculate the number of ways to choose 2 aces from the 4 aces
num_ways_2_aces = math.comb(4, 2)
num_ways_non_ace = math.comb(48, 3)
num_ways_remaining = math.comb(48, 5)
total_num_ways = math.comb(52, 5)
prob_case_3 = (num_ways_2_aces * num_ways_non_ace * num_ways_remaining * math.comb(48, 5)) / total_num_ways

Calculating the Total Probability

Now that we have calculated the probability of each case, we can add them up to get the total probability that no one has exactly two aces.

# Calculate the total probability that no one has exactly two aces
total_prob = prob_case_1 + prob_case_2 + prob_case_3

Calculating the Desired Probability

Finally, we can calculate the desired probability by subtracting the total probability from 1.

# Calculate the desired probability
desired_prob = 1 - total_prob

In this article, we have explored a probability question involving a standard deck of 52 cards, with four aces. Three players are each dealt five cards randomly from the deck. We have calculated the probability that at least one person receives exactly two aces. The desired probability is calculated by subtracting the total probability from 1.

The code used to calculate the probabilities is provided below:

import math
def calculate_probability():
# Calculate the number of ways to choose 5 cards from the 48 non-ace cards
num_ways_case_1 = math.comb(48, 5)
# Calculate the total number of ways to choose 5 cards from the 52-card deck
total_num_ways = math.comb(52, 5)

# Calculate the probability that no one has any aces
prob_case_1 = num_ways_case_1 / total_num_ways

# Calculate the number of ways to choose 1 ace from the 4 aces
num_ways_ace = math.comb(4, 1)

# Calculate the number of ways to choose 1 non-ace card from the 48 non-ace cards
num_ways_non_ace = math.comb(48, 1)

# Calculate the number of ways to choose 5 cards from the remaining 46 non-ace cards
num_ways_remaining = math.comb(46, 5)

# Calculate the total number of ways to choose 5 cards from the 52-card deck
total_num_ways = math.comb(52, 5)

# Calculate the probability that one person has exactly one ace, and the other two players do not have any aces
prob_case_2 = (num_ways_ace * num_ways_non_ace * num_ways_remaining * math.comb(48, 5)) / total_num_ways

# Calculate the number of ways to choose 2 aces from the 4 aces
num_ways_2_aces = math.comb(4, 2)

# Calculate the number of ways to choose 3 non-ace cards from the 48 non-ace cards
num_ways_non_ace = math.comb(48, 3)

# Calculate the number of ways to choose 5 cards from the 48 non-ace cards for the other two players
num_ways_remaining = math.comb(48, 5)

# Calculate the total number of ways to choose 5 cards from the 52-card deck
total_num_ways = math.comb(52, 5)

# Calculate the probability that one person has exactly two aces, and the other two players do not have any aces
prob_case_3 = (num_ways_2_aces * num_ways_non_ace * num_ways_remaining * math.comb(48, 5)) / total_num_ways

# Calculate the total probability that no one has exactly two aces
total_prob = prob_case_1 + prob_case_2 + prob_case_3

# Calculate the desired probability
desired_prob = 1 -&lt;br/&gt;

Probability Question with Deck of Cards: Three Players, 5 Cards Each, P(at least one person has exactly two aces) - Q&A
In our previous article, we explored a probability question involving a standard deck of 52 cards, with four aces. Three players are each dealt five cards randomly from the deck. We calculated the probability that at least one person receives exactly two aces. In this article, we will provide a Q&A section to further clarify the concepts and provide additional insights.
Q: What is the probability that no one has exactly two aces?
A: To calculate the probability that no one has exactly two aces, we need to consider the following cases:

Case 1: No one has any aces
Case 2: One person has exactly one ace, and the other two players do not have any aces
Case 3: One person has exactly two aces, and the other two players do not have any aces

We calculated the probability of each case and then added them up to get the total probability.
Q: How do we calculate the probability of each case?
A: To calculate the probability of each case, we need to use combinatorics and probability theory. We will use the concept of combinations to calculate the number of ways to choose cards from the deck.
For example, to calculate the probability that no one has any aces, we need to calculate the number of ways to choose 5 cards from the 48 non-ace cards, and then divide it by the total number of ways to choose 5 cards from the 52-card deck.
Q: What is the formula for calculating the probability of each case?
A: The formula for calculating the probability of each case is:

Case 1: P(no one has any aces) = (number of ways to choose 5 cards from the 48 non-ace cards) / (total number of ways to choose 5 cards from the 52-card deck)
Case 2: P(one person has exactly one ace, and the other two players do not have any aces) = (number of ways to choose 1 ace from the 4 aces) * (number of ways to choose 1 non-ace card from the 48 non-ace cards) * (number of ways to choose 5 cards from the remaining 46 non-ace cards) / (total number of ways to choose 5 cards from the 52-card deck)
Case 3: P(one person has exactly two aces, and the other two players do not have any aces) = (number of ways to choose 2 aces from the 4 aces) * (number of ways to choose 3 non-ace cards from the 48 non-ace cards) * (number of ways to choose 5 cards from the 48 non-ace cards for the other two players) / (total number of ways to choose 5 cards from the 52-card deck)

Q: How do we calculate the total probability that no one has exactly two aces?
A: To calculate the total probability that no one has exactly two aces, we need to add up the probabilities of each case.
Q: What is the desired probability?
A: The desired probability is the probability that at least one person receives exactly two aces. We can calculate this by subtracting the total probability that no one has exactly two aces from 1.
Q: How do we calculate the desired probability?
A: To calculate the desired probability, we need to subtract the total probability that no one has exactly two aces from 1.
Q: What is the final answer?
A: The final answer is the desired probability, which is the probability that at least one person receives exactly two aces.
In this article, we provided a Q&A section to further clarify the concepts and provide additional insights. We hope that this article has been helpful in understanding the probability question involving a standard deck of 52 cards, with four aces. If you have any further questions, please feel free to ask.
The code used to calculate the probabilities is provided below:
import math

def calculate_probability():
    # Calculate the number of ways to choose 5 cards from the 48 non-ace cards
    num_ways_case_1 = math.comb(48, 5)

    # Calculate the total number of ways to choose 5 cards from the 52-card deck
    total_num_ways = math.comb(52, 5)

    # Calculate the probability that no one has any aces
    prob_case_1 = num_ways_case_1 / total_num_ways

    # Calculate the number of ways to choose 1 ace from the 4 aces
    num_ways_ace = math.comb(4, 1)

    # Calculate the number of ways to choose 1 non-ace card from the 48 non-ace cards
    num_ways_non_ace = math.comb(48, 1)

    # Calculate the number of ways to choose 5 cards from the remaining 46 non-ace cards
    num_ways_remaining = math.comb(46, 5)

    # Calculate the total number of ways to choose 5 cards from the 52-card deck
    total_num_ways = math.comb(52, 5)

    # Calculate the probability that one person has exactly one ace, and the other two players do not have any aces
    prob_case_2 = (num_ways_ace * num_ways_non_ace * num_ways_remaining * math.comb(48, 5)) / total_num_ways

    # Calculate the number of ways to choose 2 aces from the 4 aces
    num_ways_2_aces = math.comb(4, 2)

    # Calculate the number of ways to choose 3 non-ace cards from the 48 non-ace cards
    num_ways_non_ace = math.comb(48, 3)

    # Calculate the number of ways to choose 5 cards from the 48 non-ace cards for the other two players
    num_ways_remaining = math.comb(48, 5)

    # Calculate the total number of ways to choose 5 cards from the 52-card deck
    total_num_ways = math.comb(52, 5)

    # Calculate the probability that one person has exactly two aces, and the other two players do not have any aces
    prob_case_3 = (num_ways_2_aces * num_ways_non_ace * num_ways_remaining * math.comb(48, 5)) / total_num_ways

    # Calculate the total probability that no one has exactly two aces
    total_prob = prob_case_1 + prob_case_2 + prob_case_3

    # Calculate the desired probability
    desired_prob = 1 - total_prob

    return desired_prob

# Execute the function
desired_prob = calculate_probability()
print(&quot;The final answer is&quot;, desired_prob)
</code></pre>
<p>Note: The code is provided for illustrative purposes only and may not be optimized for performance.</p>


                
                    
                        

                    
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