Question

Medal + Fanning

What is the contrapositive of the following statement?

"If it does not have four legs, then it is a fish."

If it is a fish, then it does not have four legs.

If it has four legs, then it is not a fish.

If it is not a fish, then it has four legs.

If it does not have four legs, then it is not a fish.

Answer 1

Contrapositive = Reverse and Inverse. It should be logically equivalent.

Original

If it does not have four legs, then it is a fish.

Reverse

If it is a fish, then it does not have four legs.

Inverse

If it is NOT a fish, then it DOES have four legs.

No one said it had to be true!

Answer 2

So with that being said it's c? @tkhunny

Answer 3

Not a clue. They answer choices are not indexed. You'll need to approach the answer with confidence.

Why don't you do what I did, only do the Inverse first, followed by the Reverse. See if you get to the same place.

Answer 4

Okay thank you! :D