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Proof

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Question 58

Prove algebraically that the sum of the squares of any k k\,k odd positive integers is always even if and only if k k\,k is even.

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Markscheme

Proof Questions

  1. GCSE
  2. /Maths
  3. /Proof

207 exam-style questions on OCR GCSE Maths Proof. Each one has a worked solution and a mark scheme showing where the marks go.

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