Aspire Faculty ID #16572 · Topic: NIMCET 2008 · Just now
NIMCET 2008

(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

$\text{Which of the following means X is real grandmother of Y?}$

Solution

$\text{In option (D): }$ $\text{X ψ Z ⇒ X is mother of Z}$ $\text{Z # L ⇒ Z and L are siblings}$ $\text{L \$ Y ⇒ L is father of Y}$ $\text{Hence X is grandmother of Y.}$

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