Answer:
Counterexample - Number which is less than 0.
-1<0 , -2<0, -3<0, -50<0 - All negative numbers are less than zero.
Explanation:
Given : 5>0, 6>0, 12>0, 16>0, 20>0, 100>0.
Conclusion : All numbers are greater than 0.
To find : Type a counter-example that would have to exist in order for the conclusion to be false ?
Solution :
A counterexample is an example that disproves a conclusion.
Expressions 5>0, 6>0, 12>0, 16>0, 20>0, 100>0.
Conclusion : All numbers are greater than 0.
Now, We take counterexample such that the conclusion statement disproves
i.e. all numbers are not greater than zero.
Counterexample - Number which is not greater than zero.
-1<0 , -2<0, -3<0, -50<0 - All negative numbers are less than zero.