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Which statement should be true in order for lamp to glow?

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Which statement should be true in order for lamp to glow?

(a) (R ∧ (~(P ∧ Q))

(b) P∧R∧Q

(c) P ∧ (Q ∧ ~R)

(d) None of the mentioned

This question was addressed to me during an interview.

My query is from Logic Circuits in division The Foundation: Logics and Proofs of Discrete Mathematics

1 Answer

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Best answer
The correct choice is (a) (R ∧ (~(P ∧ Q))

The best explanation: The circuit will be complete if R is true and Q is false or P is false.

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