UGC NET CSE | October 2020 | Part 1 | Question: 21

Question

In a park, $A, B, C, D, E$ and $F$ are sitting. $C$ is the brother of $D$’s husband and son of $A$. $F$ is the daughter of $D$ and sister of $E$.​​​​​​

1. $E$ is the grandson of $A$
2. $F$ is the daughter of $C$
3. $B$ is the father of $F$
4. There are one son and one daughter in the group
5. $C$ is the uncle of $E$

Choose the correct answer from the options given below:

• A. $(i), (ii)$ and $(iii)$ only
• B. $(i), (iii)$ and $(v)$ only
• C. $(ii), (iv)$ and $(v)$ only
• D. $(ii), (iii)$ and $(iv)$ only

Answer 1

Family Chart    

                                                          A

                                                        son

   D -->Husband (B)<-----brother <--(C )

   Daughter

    F---------E(Brother)

 

a)E is the grandson of A  True         b)F is the daughter of C false

c)B is the father of F True    d)There are one son and one daughter in the group False

e)C is the uncle of E True

Hence option B)a,c,e are true is right ans

Answer 2

• $C$ is the brother of $D$’s husband and son of $A$, which means $B,D$ are a couple and $A$ has 2 male children $B,C$.
• $F$ is the daughter of $D$ and sister of $E$, which means $B, D$ have 2 children $E, F$

  

   

• $E$ is the grandson of $A$, true.
• $F$ is the daughter of $C$, false F is $B, D$’s daughter.So option $A,C,D$ are wrong.
• $B$ is the father of $F$, true.
• There is one son and one daughter in the group, false.
• $C$ is the uncle of $F$, true.

So option (B) is correct here.

 

Answer 3

By making family chart we can know F is daughter of D not C so 2 is wrong any option including 2 is wrong hence A C and D eliminated