Answer:
The counter example to the given statement in the conclusion is: -2
Step-by-step explanation:
we are given a conclusion as:
  " All numbers are greater than 0 " .
The following statement is clearly wrong or false.
The counter example to this statement is all of the real numbers on the left of the 0 on the number line whereas all the real number on the right side of zero on the number line are greater than zero.
We can take one such number as -2; -2<0.