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Question 56

Jacob believes that for all positive integers $n^3 + n + 2$ is a multiple of 4.

Which value of $n\,$ shown below is a counter example to Jacob’s belief?

[1]

A

$n = 5$

B

$n = 6$

C

$n = 7$

D

$n = 8$

Markscheme

Algebraic Methods Questions

A Level
Maths
Algebraic Methods

257 exam-style questions on Edexcel A Level Maths Algebraic Methods, covering 7.1 Algebraic Fractions, 7.2 Dividing Polynomials, 7.3 The Factor Theorem, 7.4 Mathematical Proof, and 7.5 Methods of Proof. Each one has a worked solution and a mark scheme showing where the marks go.

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