Exam 6: Categorical Logic: Syllogisms

Which of the five rules for evaluating syllogisms can you use to determine whether the following form is valid? All M are P. All M are S. So, all S are P.

A fallacy of the undistributed middle is a violation of which of the following rules for evaluating categorical syllogisms? In a valid standard-form categorical syllogism¼

Put the following categorical syllogism into standard form and identify its mood and figure. No coal tar derivatives are nourishing foods, because all artificial dyes are coal tar derivatives and no artificial dyes are nourishing foods.

The Venn diagram representation of "All sailors are pirates" is which of the following?

Put the following categorical syllogism into standard form and identify its mood and figure. No reticulocytes are leukocytes, but all phagocytic cells are reticulocytes. Whence it follows that no phagocytic cells are leukocytes.

Put the following categorical syllogism into standard form and identify its mood and figure. Whereas all Klingon warriors are ferocious opponents and some Klingon warriors are not male, it must be that some ferocious opponents are not males.

Evaluating the validity of a sorites requires that we identify all its subconclusions.

The predicate term of the conclusion in a standard form categorical syllogism is called the

The following categorical argument form has more than three terms: "All P are M. Some non-S are M. So, no non-S are non-P." Reduce the terms to three by removing term-complements via applications of conversion, obversion, and/or contraposition.

Rewrite the following argument as a standard-form categorical syllogism; then identify its mood and figure: Some spaniels are not good hunters, though all spaniels are gentle dogs. Thus, no gentle dogs are good hunters.

Put the following categorical syllogism into standard form and identify its mood and figure. Some parrots are not pests. All parrots are pets. Thus, no pets are pests.

In a standard-form categorical syllogism, the minor premise always comes first.

Put the following categorical syllogism into standard form and identify its mood and figure. No Starships are Ferengi inventions because all Warp-capable ships are Starships and no Ferengi inventions are Warp-capable ships.

Which of the five rules for evaluating syllogisms can you use to determine whether the following form is valid? All M are P. All M are S. Some S are not P.

When forced to choose between adding a false premise and making an enthymeme clearly invalid, we adopt the practice of adding a false premise and thereby making the syllogism valid.

Put the following categorical syllogism into standard form and identify its mood and figure. Some spaniels are not good hunters, though all spaniels are gentle dogs. Thus, no gentle dogs are good hunters.

The predicate term of the conclusion is the major term of a standard form categorical syllogism.

Put the following categorical syllogism into standard form and identify its mood and figure. All storm troopers are metalheads, so some storm troopers are not ballet afficionados, since some ballet afficionados are metalheads.

A categorical statement has existential import when (and only when) it implies that its subject terms only denote classes that have at least one member (i.e., are nonempty).

When removing term-complements, which of the following is a permissible change?