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with questions that have "And in the trigger"- I'm a bit confused about the validity of the contrapositives.

For example,

If both P and Q are selected, then R is selected.

P and Q-> R

The contrapositive being-

-R-> -P or –Q

However, since it’s P AND Q that are sufficient to cause R
Couldn’t you not have R (-R) and still have P? But not Q. Alternatively, have Q, but not P.

Any explanation would be saaahhweeetttt.

You can have one and not the other and you can also not have both.

So you can have ~P and have Q or the other way around; and you can also not have both of them.

CardozoLaw09 wrote:You can have one and not the other and you can also not have both.

So you can have ~P and have Q or the other way around; and you can also not have both of them.

he's right.

to give an example:

if you drink and you drive -> you can get a DWI.

if you can't get a DWI -> you are either not drinking, not driving or not doing either one.