GATE Civil 2019 Set 1 | GA | Question: 10

Question

$P, Q, R, S$ and $T$ are related and belong to the same family. $P$ is the brother of $S, Q$ is the wife of $P$. $R$ and $T$ are the children of the siblings $P$ and $S$ respectively. Which one of the following statement is necessarily FALSE?

• A. $S$ is the aunt of $R$
• B. $S$ is the aunt of $T$
• C. $S$ is the sister-in-law of $Q$
• D. $S$ is the brother of $P$ 

Comments

R and T are the children of the siblings P and S respectively.

Logic here

Answer 1

• A. $S$ is the aunt of $R-$ It may be false as $S$ can also be the uncle.
• B. $S$ is the aunt of $T-$ It ${\color{Red} {\text{must }}}$be false, because $S$ either father of $T$ or mother of $T.$
• C. $S$ is the sister-in-law of $Q-$ It may be false as $S$ can be brother-in-law too.
• D. $S$ is the brother of $P-$ It may be false as $S$ can be sister too. 

So, the correct answer is $(B).$ 

Comments

@Lakshman Patel RJIT

 

Q is the wife of P

then how Q becomes male?

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fixed now

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in the questions where we have to check for a option which must always be false then we have to check if options can be made true in any legitimate scenario possible and for a questions where we have to check for a option which must always be true try to make options false for any legitimate scenario possible.

Answer 2

I would like to explain the comment of  @Ram Swaroop :

WHAT DO WE MEAN WHEN WE SAY "RESPECTIVELY"

example : This BLUE pen and RED pen belongs to RAM and SHAM respectively.Will mean (BLUE,RAM) and (RED,SHAM) are related.

similarily

R and T are the children of the siblings P and S respectively.

 

 will mean (R,P) and (T,S) are related such that R is the child of P and T is the child of S.

so S is the mother /father of T.

thus the statemant (B) is the false one.