Skip to content

Course home

Sign up

1.4 A: Proof

EasyMedium
12345678910111213141516171819202122232425
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”
[4]
Markscheme

1.4 A: Proof Questions

  1. A Level
  2. /Maths
  3. /1.4 A: Proof

107 exam-style questions on AQA A Level Maths 1.4 A: Proof, covering 1.4.1 Structure and methods of proof. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank