For all n ≥ 1, 3 divides (10^n - 1) Proof [ILIEKMATHPHYSICS]

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This series mainly references "How to Prove It" by Daniel Velleman Third Edition. This type of exercise would be representative of one in Chapter 3.

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  1. ILIEKMATHPHYSICS
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10^n-1 is just a bunch of '9', of course they are divisible by 3

andreikei