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Q22: Answers – Paper 3 – November 2018
Q22: Answers – Paper 3 – November 2018
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Mark Scheme
Working
k = n^{2} + 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.
Question
20) k = n^{2} + 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]