Truth tables

Question 1

what is “and”?

Question 2

^ (umgedrehtes v)

Answer 2

and

Question 3

what is “or”?

Answer 3

v

Question 4

v

Answer 4

or

Question 5

what is “if-then”?

Answer 5

->

Question 6

->

Answer 6

“if-then”

Question 7

what is “not”

Answer 7

⏋

Question 8

what is then and only then

Answer 8

<->

Question 8

⏋

Answer 8

not

Question 9

<->

Answer 9

then and only then

Question 10

Truth table:
what are the values

Answer 10

0 = false
1 = true

Question 11

what is a tautology?

Answer 11

a statement which is always true
1111

Question 12

what is the statement called that is always true

Answer 12

tautology

Question 13

what is the statement called that is always wrong?

Answer 13

contradiction/ absurdity

Question 14

what is a contradiction/ absurdity?

Answer 14

a statement that is always wrong
0000

Question 15

what is a contigency

Answer 15

a proposition that is sometimes true and sometimes false

Question 16

How is a proposition called that is sometimes true and sometimes false?

Answer 16

contingency

Question 17

when is “and” true?

Answer 17

when both statements are true

Question 18

when is “or” true?

Answer 18

when one statement is true

or

when both statements are true

Question 19

when is “if_then” true?

Answer 19

when the second statement is true

or

when the first statement is false

Question 20

when is “not” true?

Answer 20

when the statement is false

Question 21

when is “then and only then” true?

Answer 21

when both statements are true

or

when both statements are false

Question 22

what does it mean, when two propositions have the same truth value on each line?

Answer 22

the propositions are logically equivalent

Question 23

what does it mean, when two propositions have opposite truth values on each line ?

Answer 23

the propositions are contradictory