Soundness 2

"All trees are conifers. All conifers are pines. So all trees are pines" is

• Sound

• Valid but not sound

• Neither valid nor sound

"Some weasels are mammals. No mammals have fish scales. So some weasels do not have fish scales" is

• Sound

• Valid but not sound

• Neither valid nor sound

"All clowns are educated at a clown college. Some people educated at clown college do not go to class. So some clowns do not go to class" is

• Sound

• Valid but not sound

• Neither valid nor sound

"Every person living in Brooklyn lives in NYC. Every person living in NYC lives in the United States. So every person in Brooklyn lives in the United States" is

• Sound

• Valid but not sound

• Neither valid nor sound

"Some fish are vertebrates. All vertebrates are cold-blooded. So some fish are cold-blooded" is

• Sound

• Valid but not sound

• Neither valid nor sound

"All penguins live in the southern hemisphere. Nothing that lives in the southern hemisphere experiences winter in January. So no penguins experience winter in January" is

• Sound

• Valid but not sound

• Neither valid nor sound

"Some astronauts are men. All men like football. Therefore, some astronauts like football" is

• Sound

• Valid but not sound

• Neither valid nor sound

"No seals are cold-blooded. Some cold-blooded animals eat fish. Therefore some things that eat fish are not seals" is

• Sound

• Valid but not sound

• Neither valid nor sound

"No chair is a rocket ship. No rocket ship is guided is guided by sheer intuition. So no chair is guided by sheer intuition" is

• Sound

• Valid but not sound

• Neither valid nor sound

"Some clarinet players are not members of a band. All clarinet players play a woodwind instrument. Therefore some woodwind instrument players are not members of a band" is

• Sound

• Valid but not sound

• Neither valid nor sound