OCR Further Pure Core 1 2021 June — Question 3

Exam BoardOCR
ModuleFurther Pure Core 1 (Further Pure Core 1)
Year2021
SessionJune
TopicProof by induction
3 Prove by induction that, for all positive integers \(n , 7 ^ { n } + 3 ^ { n - 1 }\) is a multiple of 4.
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Q2 Q3 Q4 Q5 30