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Back to AQA Maths Foundation November 2018 Paper 3 Home
​Q22: Answers – Paper 3 – November 2018
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Content:
  • Proof
  • ​Prime Numbers​
Quizzes:
  • Proof
  • Prime Numbers

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Working

k = n2 + 9n + 1

 

Mo says,

“k will be a prime number for all integer values of n from 1 to 9”

 

Show that Mo is wrong.

You must show that your value of k is not prime.

Picture

Question

20) k = n2 + 9n + 1

 

Mo says,

“k will be a prime number for all integer values of n from 1 to 9”

 

Show that Mo is wrong.

You must show that your value of k is not prime.

[3 marks]
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