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Previous Year Question (PYQs)

(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?




Solution

$\text{In option (B): }$ $\text{U ψ R ⇒ U is mother of R}$ $\text{R # S ⇒ R is brother of S (male)}$ $\text{S # T ⇒ S is brother of T}$ $\text{Hence R and T are siblings and R is brother of T.}$

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