Solution: We compute the number of distinct permutations of 10 sensors: 4 red (R), 5 green (G), and 1 blue (B). The number of sequences is: - Coaching Toolbox
Solution: How to Compute Distinct Permutations of 10 Sensors with Repeated Colors
Solution: How to Compute Distinct Permutations of 10 Sensors with Repeated Colors
When designing systems involving sequences of objects—like arranging colored sensors—understanding the number of distinct arrangements is crucial for analysis, scheduling, or resource allocation. In this problem, we explore how to calculate the number of unique permutations of 10 sensors consisting of 4 red (R), 5 green (G), and 1 blue (B).
The Challenge: Counting Distinct Permutations with Repetitions
Understanding the Context
If all 10 sensors were unique, the total arrangements would be \(10!\). However, since sensors of the same color are indistinguishable, swapping two red sensors does not create a new unique sequence. This repetition reduces the total number of distinct permutations.
To account for repeated elements, we use a well-known formula in combinatorics:
If we have \(n\) total items with repeated categories of sizes \(n_1, n_2, ..., n_k\), where each group consists of identical elements, the number of distinct permutations is given by:
\[
\frac{n!}{n_1! \cdot n_2! \cdot \ldots \cdot n_k!}
\]
Image Gallery
Key Insights
Applying the Formula to Our Sensor Problem
For the 10 sensors:
- Total sensors, \(n = 10\)
- 4 red sensors → \(n_R = 4\)
- 5 green sensors → \(n_G = 5\)
- 1 blue sensor → \(n_B = 1\)
Plug into the formula:
\[
\ ext{Number of distinct sequences} = \frac{10!}{4! \cdot 5! \cdot 1!}
\]
Step-by-step Calculation
🔗 Related Articles You Might Like:
📰 Official Valuation Analysis: Super Micro Computers Are Worth Bruising Your Wallets! 📰 This Hidden Value Leak: Super Micro Computer Valuation Breakdown You Cant Ignore 📰 Super Micro Computers Are Blowing Valuation Models Out of the Water—Heres Why! 📰 You Are Going Viral With Rageta This Genius Hack Will Blow Your Mind 4343966 📰 Keanu 2016 7304546 📰 End Of An Era Inside The Nissan Collapse That Shook Global Markets 2494046 📰 Doubletree Chicago 9766659 📰 Wells Fargo Half Moon Bay 2542084 📰 5Th 455625 1475414 📰 Midnight Run Cast 7642665 📰 Unbelievable Host Last Nation Making Uno Online With Friends Showtime 1955298 📰 Golf Games 8920161 📰 2 1 2 Men 7585198 📰 Why Gym Leaders Fear This Poke Natural The Truth Will Shock 7218777 📰 Primavera P6 Unlocked 5 Life Changing Features You Didnt Know Existed 4846231 📰 Bucks Pacers Players 5454443 📰 When Do The Chiefs And The Bills Play 104439 📰 United States Natural Gas Fund Lp 9480333Final Thoughts
-
Compute factorials:
\(10! = 3628800\)
\(4! = 24\)
\(5! = 120\)
\(1! = 1\) -
Plug in:
\[
\frac{3628800}{24 \cdot 120 \cdot 1} = \frac{3628800}{2880}
\]
- Perform division:
\[
\frac{3628800}{2880} = 1260
\]
Final Answer
There are 1,260 distinct permutations of the 10 sensors (4 red, 5 green, and 1 blue).
Why This Matters
Accurately calculating distinct permutations helps in probability modeling, error analysis in manufacturing, logistical planning, and algorithmic design. This method applies broadly whenever symmetries or redundancies reduce the effective number of unique arrangements in a sequence.