If A @ B means A is mother of B, A # B means A is sister of B and A ! B means A is granddaughter of B, then what does P # Q ! R @ S mean, if R has only one child?
P#Q = P is sister of Q,
Q!R = Q is granddaughter R,
R@S = R is mother of S,
So,
P#Q!R @ S = S is mother of P
$$\therefore$$ The correct answer is option C
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