1. All nudists wear clothing at meal time.

All nudists are persons who wear clothing at mealtime.

This is an A categorical proposition

Nx: x is a nudist

Cx: x is a person who wears clothing at mealtime.

(x)(Nx ⊃ Cx)

3. Each apartment has a view of the ocean.

All apartments are things with a view of the ocean.

This is an A categorical proposition

Ax: x is an apartment

Ox: x has a view of the ocean

(x)(Ax ⊃ Ox)

6. There are some who dispute about Allah and serve rebellious devils.

Some who dispute about Allah serve rebellious devils.

This is an I categorical proposition.

Dx: x disputes about Allah

Sx: x serves rebellious devils.

(∃x)(Dx & Sx)

9. Vulcans never bluff.

No Vulcans are bluffers.

This is an E categorical proposition.

Vx: x is a Vulcan

Bx: x is a bluffer

(x)(Vx ⊃ ~Bx)

12. Plenty of people see the truth but cannot attain it.

Px: x is a person

Sx: x sees the truth

Ax: x attains the truth

(∃x)(Px & (Sx & ~Ax))

15. Alcoholics are not all liquor drinkers.

Ax: x is an alcoholic

Lx: x drinks liquor

(∃x)(Ax & ~Lx)

18. Not every Frigidaire is a refrigerator.

Fx: x is a Frigidaire

Rx: x is a refrigerator

(∃x)(Fx & ~Rx)

21. Snake bites are sometimes fatal.

Sx: x is a snake bite

Fx: x is fatal

(∃x)(Sx & Fx)

24. No members except the executive committee left the room.

Mx: x is a member

Ex: x is on the executive committee

Lx: x left the room

(x)((Mx & Lx) ⊃ Ex)

27. It's not the case that some whales are not endangered.

Wx: x is a whale

Ex: x is endangered

(x)(Wx ⊃ Ex)

30. All philosophers who are neither bald nor over seven feet tall are intelligent and good looking.

Px: x is a philosopher

Bx: x is bald

Ox: x is over seven feet tall

Ix: x is intelligent

Gx: x is good looking

(x)((Px & (~Bx &~Ov)) ⊃ (Ix & Gx))

33. Not all candidates for governor are Austrian by birth, but Arnold is.

~(x)(Cx ⊃  Ax) & (Ca & Aa)

Cx: x is a candidate for governor

Ax: x is Austrian by birth

a: Arnold