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Mathematics 14 Online
OpenStudy (anonymous):

Read the following conjecture. Any number that is divisible by 3 is also divisible by 6. Find a counterexample to show that the conjecture is false.

OpenStudy (anonymous):

9 is divisible by 3 but NOT divisible by 6.

OpenStudy (agent0smith):

And 3 is divisible by 3 but not by 6, and basically every 2nd multiple of 3... 3, 9, 15, 21 etc

OpenStudy (anonymous):

27?

OpenStudy (anonymous):

21 is the answer

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