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Inclusive versus Exclusive Or
Grade Level
LSAT
LR.038 Inclusive versus Exclusive Or
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At least one of P and Q is true. If P is true, R is true; if Q is true, S is true. Exactly one of R and S is true. What follows?
A
P must be true.
B
Q must be false.
C
P and Q are both true.
D
P and Q are both false.
E
Exactly one of P and Q is true.
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