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OpenStudy (anonymous):
“If the wall is strong, it is made of concrete.” Which statement is a contrapositive to the proposition and logically equivalent to it?
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OpenStudy (raden):
the contrapositive of : " if A then B " is " if not B then not A "
OpenStudy (anonymous):
soooo if the wall is not strong it is not concrete???
OpenStudy (raden):
that's backward, see the formula above
OpenStudy (anonymous):
OH! if the wall is not concrete it is not strong???
OpenStudy (raden):
right!
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OpenStudy (anonymous):
THANK You!!!
OpenStudy (raden):
you're welcome
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