Contrapositive of a MBT Question

laurenandersonlayne

Hello-

I am working through the MBT questions and was wondering if a "chain logic" for example X -> B -> C -> D contrapositive is just the "inverse of the logical chain" making it /D -> /C -> /B -> /X

I realize that is kind of hard to read, but basically.....
if X then B then C then D
contrapositive would be:
if not D then not C then not B then not X

kilgoretrout

yes. you're essentially taking away the necessary condition. if A requires B which requires C which requires D, if you don't have D, then you can't have anything else.