5m Zen
If p then q p
If p then q p pictures 5
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If p then q
If p then q p
if p then q when p is false
if p q then p s q s
if p then q not p so not q
if x p q )/( p q then x 1
if p then q not p not q
if p q 7 then p q pq
if p then q not p therefore not q
if p then q p only if q
if p then q p q
if p then q p therefore q
