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​Q15: Question – Paper 5 – June 2018

Helpful Links

Content:

• Proof by Manipulation
• Other proof sections are relevant – link to whole subsection​

Quizzes:

• Proof by Manipulation

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Question

15) n is a positive integer.

Prove that     13n + 3 + (3n – 5)(2n + 3)   is a multiple of 6.

[4 marks]​

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