Skip to content

Course home

Sign up

1.1.4 Proof by contradiction (A-level only)

EasyMedium
12345678910111213141516171819202122232425
Question 4
71%

Use proof by contradiction to show that there exist no integers x x\,x and y y\,y for which 15x+25y=415x + 25y = 415x+25y=4.

[4]
Markscheme

1.1.4 Proof by contradiction (A-level only) Questions

  1. A Level
  2. /Maths
  3. /1.1.4 Proof by contradiction (A-level only)

107 exam-style questions on OCR A Level Maths 1.1.4 Proof by contradiction (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank