Question

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.

Answer 1

the answer is 14.

Answer 2

The counter example is really easy. It would be: 9 is divisible by 3 but NOT divisible by 6. Another will be 3 is divisible by 3 but not by 6. We know this because basically every 2nd multiple of 3 is divisible by 3. hope this helps