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Which is a counterexample to the conjecture?



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



63


69



18


27



Sagot :

AL2006
From the bottom up:

-- Is 27 a counter example ?  No.  It's divisible by 3 and also by 9 .

-- Is 18 a counter example ?  No.  It's divisible by 3 and also by 9 .

-- Is 69 a counter example ?  Yes !  It's divisible by 3, but not by 9 .

-- Is 63 a counter example ?  No.  It's divisible by 3 and also by 9 .




Answer:

69 IS CORRECT

Step-by-step explanation: