Logical Reasoning

Blood Relations

Medium

Introducing a girl to his girlfriend, Ajay said," Her only brother's mother is the only child of my grandmother." How is Ajay related to this girl?

Brother

Brother-in law

Cousin

Father

✅ Correct Option: 1

Breaking down the statement: "Her only brother's mother is the only child of my grandmother."

Let's identify "the only child of my grandmother":

Ajay's grandmother has only one child
This only child must be Ajay's mother (or father, but one parent must be the only child)
So "the only child of my grandmother" = Ajay's mother

Now identifying "her only brother's mother":

Combining both parts:

The girl's mother = Ajay's mother

Since Ajay and the girl share the same mother, they are siblings.

Therefore, Ajay is the girl's brother.

The answer is Option 1: Brother.

2023: 19 June Shift 1

P is the uncle of Q, who is the daughter of R and R is the daughter-in-law of S. How is P related to S ?

2025: 13 May Shift 2

Pointing to a lady in the photograph, Sujata said, "Her son's father is the son-in-law of my mother." How is Sujata related to the lady?

2022: 6 Aug Shift 1

Kalam says, "Ravi's mother is the only daughter of my mother". How is Kalam related to Ravi?

2026: 24 May Shift 1

Vishnu told Radha,'Your mother is the daughter of my grandmother.' How are Vishnu and Radha related?

2026: 21 May Shift 2

X $ Y means X is the son of Y

X * Y means X is the wife of Y

X @ Y means X is the daughter of Y

Y % X means X is the grand daughter of Y

Which of the following shows that E and K are siblings?

2026: 25 May Shift 1

Q's mother is sister of P and daughter of M. S is daughter of P and sister of T. How is M related to T?

Solution