CHALLENGE ACTIVITY $1\mathrm{.}4\mathrm{.}1$: Tautologies, contradictions, and logical equivalence. $379208\mathrm{.}2408838.$qx$3$zqy$7$ Jump to level $11$ Select a truth assignment for the variables p$,$ q$,$ and r that show that the following proposition is not a contradiction. $-(($p $^-$q$)+($par$))$ A D$-$D$-$D$-$ p $=$ Pick A q$=$ Pick $4$ r$=$ Pick $2345$ Check Next