All negation
Not all, some, there is at least 1
Some negation
No, all (are not)
No negation
All, some, there is at least 1
but, while
and
either
or
Statement p is said to imply q if q is true whenever p is true
Relation
P and Q are logically equivalent if their truth tables are identical
Equivalence
PQPQ
modus ponens
PQnotQnotP
modus tolens
PQ, QR, PR
Syllogism
PQnotPnotQ
Fallacy of the inverse
PQQP
fallacy of the converse
L
50
C
100
D
500
M
1000
四
4
五
5
六
6
七
7
八
8
九
9
十
10
百
100