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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
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)!)
Question 2
Easy
What is C(5, 0)?
💡 Hint: Think about picking no items at all.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the formula for combinations?
- A) C(n
- k) = n! / (k!(n - k)!)
- B) P(n
- k) = n! / (k!(n - k)!)
- C) C(n
- k) = k! / (n!(n - k)!)
💡 Hint: Recall how we derive the number of ways to select.
Question 2
True or False: The order of selection matters in combinations.
- True
- False
💡 Hint: Think about how you list selections to compare.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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!
Question 2
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.
Challenge and get performance evaluation