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I need confirmation whether my understanding of OR rule is correct.
There is a rule in the last game of PT24 that says: G cannot be prescribed if both N and U are prescribed.
N & U -->/G
Contrapositive= G --> /N or /U
So there are 3 possibilities if the contrapositive is triggered: 1) N is out 2) U is out or 3) N and U are both out.
If I CHANGE the rule to G --> N or U, would 3 possibilities be 1) N is in 2) U is in or 3) N and U are both in?
Is it correct to consider OR in the above examples as inclusive(and/or), not exclusive?
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Thank you!! ^_^
Yes, you are correct. The OR is inclusive in this case (it's an "at least one" type of OR)
For the original rule, you can read the contrapositive to mean
"if G is in, at least one of N or U are out"
So all three possibilities you list are correct: U is out, N is out, U and N are both out.
If you CHANGE the rule to G-->N or U, then at least one of N or U would have to be in. So, N in, or U in, or both N and U in.
You've got this!