Question

A + B means A is sister of B. A/B means A is son of B. A = B means A is brother of B. A @ B means A is father of B. Which of the following shows M is grandson of P?

• A. P = B \, @ \, M + N \, @ \, S
• B. L @ M \, @ \, N = K / P
• C. M / T + J = L @ P
• D. P @ B = S @ M = N

Hint:

For coded blood-relations, build a chain parent - child step by step and separately confirm the subject’s gender if “grandson/granddaughter” is asked.

Answer 1

The Correct Option is D

Step 1: Decode each symbol.
$A@B$: $A$ is father of $B$;\quad $A/B$: $A$ is son of $B$ (so $B$ is parent of $A$);\quad $A=B$: $A$ is brother of $B$ (male);\quad $A+B$: $A$ is sister of $B$ (female).
Step 2: Parse option (d) left to right.
$P @ B$ \Rightarrow $P$ is father of $B$.
$B = S$ \Rightarrow $B$ is brother of $S$ \Rightarrow $P$ is also father of $S$ (siblings share parent).
$S @ M$ \Rightarrow $S$ is father of $M$.
$M = N$ \Rightarrow $M$ is brother of $N$ \Rightarrow $M$ is explicitly male.
Step 3: Conclude the relationship.
Since $P$ is father of $S$ and $S$ is father of $M$, $P$ is grandfather of $M$. Because $M$ is male (from $M=N$), $M$ is grandson of $P$.
\[ \boxed{\text{Hence, }(d)\text{ shows }M\text{ is grandson of }P.} \]