Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
10. Combinatorics & Probability
Combinatorics
2:29 minutes
Problem 62
Textbook Question
Textbook QuestionEvaluate the given binomial coefficient 11 8
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Binomial Coefficient
A binomial coefficient, denoted as C(n, k) or 'n choose k', represents the number of ways to choose k elements from a set of n elements without regard to the order of selection. It is calculated using the formula C(n, k) = n! / (k!(n-k)!), where '!' denotes factorial, the product of all positive integers up to that number.
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Factorial
The factorial of a non-negative integer n, denoted as n!, is the product of all positive integers from 1 to n. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120. Factorials are fundamental in combinatorics, particularly in calculating binomial coefficients, as they provide the necessary counts of arrangements.
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Combinatorial Interpretation
The combinatorial interpretation of binomial coefficients provides a way to understand their significance in counting problems. For instance, C(n, k) counts the number of distinct groups of k items that can be formed from n items, which is essential in probability and statistics for determining outcomes in various scenarios.
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Fundamental Counting Principle
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