Question: 6. Use a proof by induction to show that the sum 1 + 3 + 9 + 27 + ... + 3n-1 = (6 marks)

6. Use a proof by induction to show that the sum 1 + 3 + 9 + 27 + ... + 3n-1 = (6 marks) Assume you are visiting another country where everything you buy requires exact change, but the country only has $2 and $3 coins. Use a proof by induction to show that for any product that costs $2 or more you can always make exact change. (6 marks) MacBook esc on se WER A
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