And/Or contrapositive

Posts: 37
Joined: Fri Apr 02, 2010 12:03 am

And/Or contrapositive

Postby e10 » Mon Jun 28, 2010 11:30 am

Question about and/or statements and their contrapositives.

If a statement said the following:

To graduate from HLS you must be both smart and resourceful.

Therefore, the contrapositive of the statement would be:

If you are not smart or not resourceful then you will not graduate from HLS.

Can someone explain the and --> or part? I am getting a little confused ( thinking too much about the or), what if someone is smart but not resourceful, can they not graduated then?

Any explanation/examples would be appreciated.

User avatar
Posts: 486
Joined: Sat Jun 13, 2009 7:29 pm

Re: And/Or contrapositive

Postby TheTopBloke » Mon Jun 28, 2010 11:32 am

Well simply stated, you require both, so if you don't have one OR the other, than its no good.

User avatar
Posts: 1263
Joined: Mon Dec 07, 2009 9:24 pm

Re: And/Or contrapositive

Postby LSAT Blog » Mon Jun 28, 2010 11:43 am

As an exercise, break the statement into two parts, and things may become clearer:

If graduate -> smart

If graduate -> resourceful


If not smart -> not graduate

If not resourceful -> not graduate

Graduating requires both, so...if you lack one, the other, or both, then you cannot graduate.

Return to “LSAT Prep and Discussion Forum”

Who is online

Users browsing this forum: Everythingimnot, Experiment626, heyduchess, QueenBAYder, sodomojo, WutSheOrder and 7 guests