OCR MEI AS Paper 2 2023 June — Question 3

Exam BoardOCR MEI
ModuleAS Paper 2 (AS Paper 2)
Year2023
SessionJune
TopicProof
3 A student makes the following conjecture.
For all positive integers \(n , 6 n - 1\) is always prime. Use a counter example to disprove this conjecture.
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