4. Pairs (must be together)

Under this logical condition, A and B are inseparable.

Now things are starting to get more complicated. Conditionals get combined into sets resulting in relationships like pairs and at least one. Pairs are just A → B + B → A.

Prof. Bazett of the University of Cincinatti introduces you to biconditionals in the following video:

This video is purpose-built for the LSAT and expands into combining biconditionals and contrapositives.

Inverted Pairs

What if you invert the original “if and only if” conditional: A → B + B → A?
Instead you use: ~A → B + ~B → A
This results in an opposite condition because now the A and B can never be together.

Next LSAT: January 26

Inverted Pair

A and B cannot be on the same team together.

Next LSAT: January 26