$[1\mathrm{.}5$ point$]$ Determine whether the argument is valid or invalid. $($Select True is valid, False if invalid$)$ "The ice cream is good iff the ice cream is chocolate and vanilla flavored". "The ice cream is either not vanilla flavored or not chocolate flavored". "Therefore, the ice cream is not good"

$\frac{T}{F}$

$[1\mathrm{.}5$ point$]$ Determine whether the argument is valid or invalid. $($Select True is valid, False if invalid$)"$If you pull that fire alarm, you will get in big trouble"."If you get in big trouble, then you will get arrested"."You did not got in big trouble.", "Therefore, there exists a person who did not pull that fire alarm."

$\frac{T}{F}$