asked 93.2k views
5 votes
Determine if the bioconditional is true. if false, give a counterexample

"the bulb does not shine if and only if the lamp is unplugged"
True/False
Counterexample:

1 Answer

2 votes
It's false.  The bulb does not shine if the circuit is not closed. The bulb does not shine if the bulb is broken.
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User Rdmpage
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