Combinations (HSC SSCE Mathematics Extension 1): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a combination in mathematics?
What is a combination in mathematics?
Unordered selection of items
What does the notation nCr represent?
What does the notation nCr represent?
Number of combinations
How is nCr calculated?
How is nCr calculated?
n!/(r!(n-r)!)
What is the result of 5C3?
What is the result of 5C3?
10
In combinations, what is ignored?
In combinations, what is ignored?
Order
What is Pascal's Triangle used for?
What is Pascal's Triangle used for?
Visualizing binomial coefficients
What is a real-world application of combinations?
What is a real-world application of combinations?
Selecting committee members
What does the identity nCr + nC(r-1) equal?
What does the identity nCr + nC(r-1) equal?
n+1C(r-1)
What is the definition of n! (n factorial) in mathematics?
What is the definition of n! (n factorial) in mathematics?
Product of all integers from 1 to n
What distinguishes permutations from combinations?
What distinguishes permutations from combinations?
Order matters