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

6. Use a proof by induction to show that the sum

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

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