Logic

Question 1

A proposition is….

Answer 1

A statement that can be true, false, or indeterminate

Question 2

Indeterminate

Answer 2

Can be true or false (undecided)

Question 3

A proposition is not….

Answer 3

A question

Question 4

Lower case letters

Answer 4

Represent propositions

Question 5

Negation

Answer 5

The opposite of a proposition

Question 6

Symbol for a negation

Answer 6

Rotated “L” shape

Question 7

Conjunction

Answer 7

When two propositions are joined with AND

Question 8

Symbol for conjunction

Answer 8

“A” shape

Question 9

Disjunction

Answer 9

When two propositions are joined with OR

Question 10

Two possible disjunctions

Answer 10

Inclusive or exclusive

Question 11

Inclusive disjunction

Answer 11

Meaning either or both (When it’s possible to have both)

Question 12

Exclusive disjunction

Answer 12

Meaning either but not both (When you can’t have both)

Question 13

Truth tables

Answer 13

Evaluate all possible truth values

Question 14

If values of two tables are the same

Answer 14

The statements are logically equivalent

Question 15

Symbol for logically equivalent

Answer 15

Double arrow

Question 16

Tautology

Answer 16

All values are true

Question 17

Contradiction

Answer 17

If all values are false

Question 18

Equivalents are represented by

Answer 18

A double arrow

Question 19

Implication

Answer 19

Single arrow pointing right (IF… THEN)

Question 20

Antecedent

Answer 20

(If)

Question 21

Consequent

Answer 21

(Then)

Question 22

3 dots

Answer 22

Therefore

Question 23

If something is all true

Answer 23

It is a valid argument

Question 24

A valid argument

Answer 24

Must be a tautology

Question 25

Q arrow P

Answer 25

Converse

Question 26

P arrow Q

Answer 26

Implication

Question 27

Not p arrow not q

Answer 27

Inverse

Question 28

Not q arrow not p

Answer 28

Contrapositive

Question 29

Order matters with

Answer 29

Implications

Question 30

If + Only

Answer 30

Double arrow

Question 31

False at the front of an implication

Answer 31

Makes the whole statement true

Question 32

T T

Answer 32

= Conjunction

Question 33

F F

Answer 33

= Disjunction

Question 34

T F

Answer 34

= Implication

Question 35

F F p implies q

Answer 35

True

Question 36

F T p implies q

Answer 36

True

Question 37

T F p implies q

Answer 37

False

Question 38

T T p implies q

Answer 38

True

Question 39

Exclusive disjunction symbol

Answer 39

“V” with a line underneath

Question 40

Inclusive disjunction symbol

Answer 40

“V”

Question 41

Logically equivalent example….

Answer 41

Inverse and Converse

Question 42

Logically equivalent example 2:

Answer 42

Implication and contraceptive

Question 43

An invalid argument will have at least….

Answer 43

One false

Question 44

A contradiction has….

Answer 44

All F’s in the last column

Question 45

A tautology has….

Answer 45

All T’s in the last column

Question 46

At least 1 must be true ….

Answer 46

To get T for or

Question 47

Only time false with or

Answer 47

F F

Question 48

Only time you can get true with and

Answer 48

T T

Question 49

An invalid argument

Answer 49

Is not always true (Must have at least one false)

Question 50

A valid argument

Answer 50

Is always true (all Ts)

Question 51

Venn diagram for exclusive disjunction

Answer 51

Just intersection

Question 52

Venn diagram for inclusive disjunction

Answer 52

All of Venn

Question 53

Equivalent

Answer 53

If and only if

Question 54

And can only be true if….

Answer 54

Both prepositions are true

Question 55

An equivalent can only be true if….

Answer 55

Both prepositions are the same (TT or FF)