Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Sign In Apply for Membership

Categories

How do you diagram "except when"?

SeriousbirdSeriousbird Alum Member
in Logical Reasoning 1278 karma
I ran into this on a Principle question. I diagrammed it as a unless condition, I was not completely sure though and really nervous about it.

Is it the same as either or/or not both? I looked in my notes for the group 1-4 lessons and I didn't find it in there.

Show Related Discussions

Comments

  • LSATShinobiLSATShinobi Free Trial Member
    edited August 2016 236 karma
    An example would be All A's are B's EXCEPT WHEN they are C's. That in english essentially means, if you are an A but NOT a C, then you are a B. So Diagrammed, it would be A+~C---->B. Can anyone check my Reasoning on that? Lol
  • Swift777Swift777 Member
    edited August 2016 83 karma
    @Albertoduro1xx said:
    All A's are B's EXCEPT WHEN they are C's.
    In this case, I would personally diagram it as (A -> B) -> C
    Taking the contrapositive, that would be C -> not (A -> B)

    If you just treat (A->B) as a variable, say X, then it just reads:
    X -> C
    Contrapositive: C -> X

    If you take an example, "All Jedi use the force except when they are tired."
    (Jedi -> Use the Force) -> (not tired)
    Tired -> not (Jedi -> Use the Force)
    The contrapositive would read: If they are tired, Jedi are not able to use the force.
  • AlexAlex Alum Member ⭐
    23929 karma
    @Swift777 said:
    All A's are B's EXCEPT WHEN they are C's.
    In this case, I would personally diagram it as (A -> B) -> C
    Taking the contrapositive, that would be C -> not (A -> B)


    I think this way makes the most sense to me and probably how I would do it! It definitely took me a second to think about it though. lol
Sign In or Register to comment.