Question

If

$A+B$ means $A$ is the brother of $B$;

$A-B$ means $A$ is the sister of $B$ and

$A\times B$ means $A$ is the father of $B$.

Which of the following means that $C$ is the son of $M$ ?

• A. $M-N\times C+F$
• B. $F-C+N\times M$
• C. $N+M-F\times C$
• D. $M\times N-C+F$

Answer 1

Answer: (D)

$M\times N-C+F$

$M\times N\to M$ is the father of $N$.
$N-C\to N$ is the sister of $C$
and $C+F\to C$ is the brother of $F$.
Hence, $M$ is the father of $C$ or $C$ is the son of $M$.

option D.