Lesson 6: Formative Assessment

Question 1

____________ refers to relations existing in between propositions with the same subject and predicate, but differing in quantity and/or quality.

Answer 1

Logical opposition

Question 2

__________ are propositions that differ in both quantity and quality

Answer 2

Contradictories

Question 3

_________ are propositions that have opposite truth values

Answer 3

Contradictories

Question 4

For contradictories, if one proposition is true, the other must be _________

Answer 4

false

Question 5

The contradictory of “All human beings are mortal beings.” is:

Answer 5

Some human beings are not mortal beings.

Question 6

The contradictory proposition of “Some birds are eagles.” is:

Answer 6

All birds are not eagles.

Question 7

________ are both universal propositions but differ in quality.

Answer 7

Contraries

Question 8

In terms of truth value, contraries can be both _____

Answer 8

false

Question 9

In terms of truth value, contraries cannot be both ______

Answer 9

true

Question 10

Write the contrary of: All human beings are mortal beings.

Answer 10

All human beings are not mortal beings.

Question 11

Write the contrary of: No dogs are cats.

Answer 11

All dogs are cats.

Question 12

______ are both particular proportions but differ in quality

Answer 12

Subcontraries

Question 13

In terms of truth value, subcontraries can be both _________

Answer 13

true

Question 14

In terms of truth value, subcontraries cannot be both _______

Answer 14

false

Question 15

The subcontrary of “Some dogs are dalmatians” is:

Answer 15

Some dogs are not dalmatians.

Question 16

_________ are propositions that are same in quality but differ in quantity

Answer 16

Subalterns

Question 17

In terms of truth value, subalterns can be both true if the ______ proposition is true

Answer 17

universal

Question 18

In terms of truth value, subalterns can be both false if the _________ proposition is false

Answer 18

particular

Question 19

For contraries, at least one of the universal propositions must be _________

Answer 19

false

Question 20

For subcontraries, at least one of the particular propositions must be ________

Answer 20

true