Counting strategies (Edexcel GCSE Maths): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are counting strategies?
What are counting strategies?
Systematic methods to find combinations
Why use an organised approach when counting combinations?
Why use an organised approach when counting combinations?
Avoids missing items & double counting
What is the first step in systematic listing?
What is the first step in systematic listing?
List all combos starting with 1st item
Using digits , , , how many different three-digit numbers can you make?
Using digits , , , how many different three-digit numbers can you make?
numbers
Badges have colours (R, G, B) and shapes (C, S, O). How many different badges?
Badges have colours (R, G, B) and shapes (C, S, O). How many different badges?
badges
In a league with teams, each plays every other team once. How many matches total?
In a league with teams, each plays every other team once. How many matches total?
matches
What should you always state at the end of a counting strategy question?
What should you always state at the end of a counting strategy question?
The total number of combinations
What do examiners want to see in counting strategy questions?
What do examiners want to see in counting strategy questions?
Your organised method
When counting matches between teams, what key principle must you remember?
When counting matches between teams, what key principle must you remember?
Each pair only plays once
How should you organise your systematic list?
How should you organise your systematic list?
In logical order (alphabetical/numerical)