Exercise $4\mathrm{.}5$b$,4\%$

On page $2$ of the PDF file above, prove questions $2,4$ and $7,$ each with

a$.$ Truth$-$table method

b$.$ S$/1$ rules strictly

c$.$ Resolution

$($Note: you need to first translate sentences to WFFs; the square in the file means "therefore", or $"$to