Question

If ${}^{\prime }P+Q^{\prime }$ means 'P is the father of Q', '$P\times Q$' means 'P is the brother of Q', ${}^{\prime }P-Q^{\prime }$ means 'P is the mother of Q', then which of the following is definitely true about ${}^{\prime }C-A+B^{\prime }$?

• A. C is the mother of B
• B. B is the father of A
• C. A is the son of C
• D. B is the son of A
• E. None of the above

Answer 1

The correct option is C A is the son of C

$C-A+B$
$C-A$ means C is the mother of A.
$A+B$ means A is the father of B.
$\Rightarrow C-A+B$ will mean A is the son of C.
B may be the son or daughter of A.