alleryExactly two switches A–D are on. Claims: A off or B on(or both); C,D same state; exactly one of A,C on; B off. Exactly 3 claims are true. Which pair is on?
AAB
BAD
CBC
DCD
Answer & Solution
Correct answer: A. AB
AB alone makes the four claims true,true,true,false, exactly three truths.
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