Question

Consider the following information and answer the question given below:

'P # Q' means 'P is the father of Q';
'P + Q' means 'P is the mother of Q';
'P - Q' means 'P is the brother of Q';
'P * Q' means 'P is the sister of Q'.

Given $A + B \# C - D$ , then A is D's

Accepted Answer

D. - $A + B \implies A$ is the mother of $B$. - $B \# C \implies B$ is the father of $C$. - $C - D \implies C$ is the brother of $D$. Since $B$ is the father of $C$ and $D$, and $A$ is the mother of $B$, $A$ is the grandmother of $D$.

Coded Blood Relations - 1

Explanation

Practise this under exam conditions