# 1) Prove: 3n- 1 is divisible by 2, for all natural numbers n>=1.

##### Home/Education/Expert Q&A/1) Prove: 3^{n}– 1 is divisible by 2, for all natural numbers n>=1.

**Question:**

1) Prove: 3^{n}– 1 is divisible by 2, for all natural numbers n>=1.

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