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Question 1
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(i) P ψ Q means P is mother of Q
(ii) P ∈ Q means P is sister of Q
(iii) P $ Q means P is father of Q
(iv) P # Q means P is brother of Q
Which of the following means R is brother of T?
A.
$\ \text{R ψ S # U \$ T}$
B.
$\ \text{U ψ R # S # T}$
C.
$\ \text{U ψ R ∈ S ψ T}$
D.
$\ \text{T # S \$ Q ∈ R}$
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