14. 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. 21 24 12 18
1 answer
A counterexample to the conjecture is the number 21. 21 is divisible by 3, but it is not divisible by 6 since 21 divided by 6 equals 3 with a remainder of 3.