Proof (Edexcel GCSE Maths): Quizzes

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Proof
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10 questions from this quiz

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How are even numbers represented algebraically?

2n2n

How are odd numbers represented algebraically?

2n+12n + 1

How would you represent three consecutive numbers algebraically?

nn, n+1n + 1, n+2n + 2

What does the identity symbol mean in proof questions?

Equal for all possible values

How many counterexamples are needed to disprove a statement?

Only one

When three odd numbers are added, what is the result?

Always odd

What do most proof questions require you to do?

Rearrange to show equality

What must identity proofs demonstrate?

Work for all possible values

What is the most efficient counterexample strategy?

Look for likely failure cases

Which value disproves 'consecutive square differences are always prime'?

5242=95² - 4² = 9

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