## Truth Table for: p → r q → r hence, p V q → r

pqrp V qp → rq → r(p V q) → r
TTTTTTT
TTFTFFF
TFTTTTT
TFFTFTF
FTTTTTT
FTFTTFF
FFTFTTT
FFFFTTT

Since for all the critical rows when the premises are true the corresponding conclusion is also true. Hence the argument form is valid.

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