Skip to content
MathsGenie logo
Quick links
Open app

Course home

  1. A Level
  3. Maths WJEC
  5. Question bank

3.1.1 Proof (A-level only)

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485
Question 20

Use proof by contradiction to show that there exist no integers a a\,a and b b\,b such that 15a+25b=215a + 25b = 215a+25b=2.

[4]

3.1.1 Proof (A-level only) Questions

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