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1.1 Proof

1.1 Proof

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Question 8

It is given that n n\,n is an integer.

One of the expressions below is even for every value of nnn.

Identify this expression.

Tick one box.

A

2n+12n + 12n+1

B

n2+nn^2 + nn2+n

C

n2+1n^2 + 1n2+1

D

3n3n3n

Markscheme

1.1 Proof Questions

  1. A Level
  2. /Maths
  3. /1.1 Proof

132 exam-style questions on OCR (MEI) A Level Maths 1.1 Proof, covering 1.1.1 Structure of mathematical proof, 1.1.2 Disproof by counter example, 1.1.3 Proof by contradiction (A-level only), and 1.1 Proof. Each one has a worked solution and a mark scheme showing where the marks go.

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