4. (a) Negate the statement \'\'Sarah has a spaceship and has three fingers and is from Venus\'\' and convert it to formal logic. (b) Simplify the statement from (a) as much as possible using equivalence rules. Solution a) sarah neither have spaceship nor has three fingers nor is from venus. b)s: sarah S: spaceship t: three fingers v:venus s-->S ^ t ^ v.

1. 4. (a) Negate the statement ''Sarah has a spaceship and has three fingers and is from Venus''
and convert it to formal logic. (b) Simplify the statement from (a) as much as possible using
equivalence rules.
Solution
a) sarah neither have spaceship nor has three fingers nor is from venus.
b)s: sarah
S: spaceship
t: three fingers
v:venus
s-->S ^ t ^ v