Question

Study the following information carefully and answer the question below.
(i) ${}^{\prime }P\times Q^{\prime }$ means `P is the brother of Q'.
(ii) $\text{'}P-Q\text{'}$ means 'P is the mother of Q'.
(iii) ${}^{\prime }P+Q^{\prime }$ means 'P is the father of Q'.
(iv) $‘P÷Q^{\prime }$ means 'P is the sister of Q'.
Which of the following means 'B is the grandfather of F'?

• A. $B+J-F$
• B. $B-J+F$
• C. $B\times T-F$
• D. $B+T+F$
• E. None of the above

Answer 1

The correct option is A $B+J-F$

From option (a), $B+J-F$

$B+J\to B$ is the father of J.
$J-F\to J$ is the mother of F.
So, B is the grandfather of F.