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1.4.1 Structure and methods of proof

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Question 20

Use proof by contradiction to show that there exist no integers $a\,$ and $b\,$ such that $15 a + 25 b = 2$ .

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Markscheme

1.4.1 Structure and methods of proof Questions

A Level
Maths
1.4.1 Structure and methods of proof

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

1.4.1 Structure and methods of proof

Question bank

1.4.1 Structure and methods of proof

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Question 20

Use proof by contradiction to show that there exist no integers $a\,$ and $b\,$ such that $15 a + 25 b = 2$ .

[4]

Markscheme

1.4.1 Structure and methods of proof Questions

A Level
Maths
1.4.1 Structure and methods of proof

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