Question

Either Micah is from Venus or Justin is from Mars. If Micah is from Venus, then John is a robot. If Justin is from Mars, then John is a robot. Either John is not a robot or John eats Mammals. If John eats mammals, then Justin is from Mars. Therefore, Justin is from Mars. Which of these is a possible counter example to this argument?
1.Justin vs from Mars
a. Micah is from Venus
b. Justin is from Jupiter

2. John east Mammals
a. Micah is from Mars
b. Justin is from Mars
c. John is a robot

Answer 1

Answer:

John eats Mammals

a. Micah is from Mars

b. Justin is from Mars

c. John is a robot

Explanation:

Justin is from Mars, satisfying the condition so that John is a robot and eats mammals. However, John is a robot and a mammal when Micah is from Venus. So if Micah is from Mars then John cannot be a robot and also eat mammals, hence the contradiction or counter.