What is the contrapositive of the following statement?

"If it does not have four legs, then it is a fish." (4 points)

1)
If it is a fish, then it does not have four legs.
2)
If it has four legs, then it is not a fish.
3)
If it is not a fish, then it has four legs.
4)
If it does not have four legs, then it is not a fish.

Question

What is the contrapositive of the following statement?

"If it does not have four legs, then it is a fish." (4 points)

	1)	
If it is a fish, then it does not have four legs.
	2)	
If it has four legs, then it is not a fish.
	3)	
If it is not a fish, then it has four legs.
	4)	
If it does not have four legs, then it is not a fish.

zzr0ck3r · Answer

the contraposaitive for 

a implies b

is

-b implies -a