Question

Study the following information carefully and answer the questions given below.
(i) ${}^{\prime }P\times Q^{\prime }$ means 'P is the mother of Q'.
(ii) ${}^{\prime }P+Q^{\prime }$ means 'P is the sister of Q'.
(iii) ${}^{\prime }P÷Q^{\prime }$ means 'P is the father of Q'.
(iv) ${}^{\prime }P-Q^{\prime }$ means 'P is the brother of Q'.
Which of the following means 'J is the paternal grandfather of W'?

• A. $W÷T÷J$
• B. $J÷T\times W$
• C. $J\times T\times W$
• D. $J\times T÷W$
• E. None of these

Answer 1

The correct option is E None of these

From option (a)
$W÷T\to W$ is the father of T.
$T÷J\to T$ is the father of I.
So, W is the grandfather of J.
From option (b)
$J÷T\to J$ is the father of T.
$T\times W\to T$ is the mother of W.
So, J is the maternal grandfather of W.
From option (c)
$J\times T\to J$ is the mother of T.
$T\times W\to T$ is the mother of W.
So, J is the maternal grandmother of W.
From option (d)
$J\times T\to J$ is the mother of T.
$T÷W\to T$ is the father of W.
So, J is the grandmother of W.
So, all the given relations are false.