Practice - Unordered Selection of k Elements
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Practice Questions
Test your understanding with targeted questions
How many ways can you choose 2 fruits from a basket of 4 different fruits?
💡 Hint: Use the formula C(n, k) = n! / (k!(n - k)!)
What is C(5, 0)?
💡 Hint: Think about picking no items at all.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for combinations?
💡 Hint: Recall how we derive the number of ways to select.
True or False: The order of selection matters in combinations.
💡 Hint: Think about how you list selections to compare.
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Challenge Problems
Push your limits with advanced challenges
Using a set of letters A, B, C, D, E, how many ways can you select 3 letters if repetitions are not allowed?
💡 Hint: Remember the formula for choosing without replacement!
In a flower shop with 6 types of flowers, how many distinct bouquets of 4 can be created allowing repetitions?
💡 Hint: Think how grouping flowers allows flexibility in counts.
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Reference links
Supplementary resources to enhance your learning experience.