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04-01-2017
Mathematics

contestada

Any number that is divisible by 3 is also divisible by 9.

Find a counterexample to show that the conjecture is false.

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04-01-2017

12 is div. by 3 but not 9

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04-01-2017

3, 6, 12, 15, 21, 24, 30.....and so on are divisible by 3 but not 9

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