Unit 18 - Unit 19 ( Group 2)

What is the definition of symmetry for a two-place predicate P

• When the sentence XPY is true, the sentence YPX is also true

• When the sentence YPX is true, the sentence XPY is also true

• When the sentence XPY is false, the sentence YPX is also false

• When the sentence YPX is false, the sentence XPY is also false

If the sentence "John loves Mary" entails the sentence "Mary loves John," what can we conclude about the predicate P?

• P is reflexive

• P is asymmetric

• P is symmetric

• P is transitive

Which of the following is an example of a symmetric two-place predicate?

• "Is taller than"

• "Is a parent of"

• "Is married to"

• "Is a sibling of"

Suppose we have the sentence "A is equal to B." If the sentence "B is equal to A" is also true, what property does the predicate possess?

• Symmetric

• Asymmetric

• Reflexive

• Transitive

If the sentence "X is a friend of Y" implies that "Y is a friend of X," what property does the predicate exhibit?

• Symmetric

• Asymmetric

• Reflexive

• Transitive

Given a two-place predicate P, if the sentence XPY is a CONTRADICTORY of YPX, then P is______predicate

• an ASYMMETRIC

• a CONTRADICTORY

• SYMMETRIC

• Predicate

What property does the predicate P possess if the sentence "X is greater than Y" is a contradictory of the sentence "Y is greater than X"?

• Symmetric

• Asymmetric

• Reflexive

• Transitive

Which of the following is an example of an asymmetric two-place predicate?

• Is equal to

• Is married to

• Is a sibling of

• Is taller than

If the sentence "A is greater than B" is a contradictory of the sentence "B is greater than A," what property does the predicate P possess?

• Symmetric

• Asymmetric

• Contradictory

• Transitive

Is John under the talble a contradictory of the the table is under the John?

• Yes

• No