Question

Any number that is divisible by 4 is also divisible by 8.

Answer 1

Find a counterexample to show that the conjecture is false.

40
24
26
12

Answer 2

Look at all the numbers.
Lets rid those that arent related to your question.
first,Are all of them divisible by 4?

Answer 3

Is it 12?
yes but 12 is not dividible by 8
Is that the answer?
well 26 is not

Answer 4

Yes 12 is the answer. Since 40, 24 and 12 are divisible by 4.

The conjecture is if a number is divisible by 4 then it is also divisible by 8.

However, the conjecture is wrong since 12 is divisible by 4, but it's not divisible by 8.