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3.1.1 Proof (A-level only)

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Question 24

Given that n∈Nn \in \mathbb{N}n∈N, use algebra to prove by contradiction that

“if n2+6n+3 is even, then n is odd” \text{“if } n^2 + 6n + 3 \text{ is even, then } n \text{ is odd”} “if n2+6n+3 is even, then n is odd”
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3.1.1 Proof (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.1.1 Proof (A-level only)

107 exam-style questions on WJEC A Level Maths 3.1.1 Proof (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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