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which of the following is valid ?

1- p  => ( q v r )

2- p  => ( q ^ r )

please provide little bit explaination?
in Mathematical Logic by (73 points) | 16 views
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Valid means tautology, none of these are tautologies.

First says if p is T then (q or r) must be T, which isn't necessary.

Second says if p is T the both q and r must also be T, which also isn't necessary.

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