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Blood relation practice questions for bank exams

By the PrepMatic team · Updated 9 Oct 2026 · 3 min read

Blood relation questions describe how people in a family are connected and ask how one person relates to another. Blood relations is a commonly tested reasoning topic in bank exams. The trick is to turn every sentence into a family tree and then read the answer off the tree. Try the five questions below, including a coded one of the type that appears in mains.

Relations worth memorising

When a person's gender is not stated, the question usually asks for a relation that does not depend on it, such as "cousin" or "sibling".

Five practice questions

Question 1

Pointing to a photograph, Ravi, a man, says, "She is the daughter of my father's only son." How is the girl related to Ravi?

• A. Sister
• B. Niece
• C. Daughter
• D. Wife

Question 2

P is the brother of Q. Q is the mother of R. R is the father of S. How is P related to S?

• A. Grand-uncle
• B. Uncle
• C. Cousin
• D. Nephew

Question 3

In a code, A + B means A is the mother of B, A − B means A is the brother of B, and A × B means A is the father of B. If P + Q − R × S, how is P related to S?

• A. Mother
• B. Aunt
• C. Great-grandmother
• D. Grandmother

Question 4

Pointing to a woman, Meena, a woman, says, "Her son is the husband of my mother's only daughter." How is the woman related to Meena?

• A. Mother
• B. Sister-in-law
• C. Mother-in-law
• D. Aunt

Question 5

A man looks at a photograph and says, "Brothers and sisters I have none, but that man's father is my father's son." Whose photograph is it?

• A. His own
• B. His son's
• C. His nephew's
• D. His father's

Answers and explanations

1. C. Ravi's father's only son is Ravi himself, since Ravi is a man and the only son. So the girl is Ravi's daughter.
2. A. P is the brother of Q, and Q is the mother of R, so P is R's maternal uncle. R is the father of S, which makes P the maternal uncle of S's father. That is the great-uncle, or grand-uncle, of S.
3. D. P is the mother of Q. Q is the brother of R, so P is also the mother of R. R is the father of S. So P is the mother of S's father, which means P is S's grandmother.
4. C. Meena's mother's only daughter is Meena. So the woman's son is Meena's husband, and the woman is Meena's mother-in-law.
5. B. "My father's son" is the speaker himself, because he has no brothers. So "that man's father is me", which makes the man in the photograph his son.

How to prepare blood relation questions

• Rewrite the nested phrase from the inside out. In Question 5, "my father's son" becomes "me" (given no brothers), then the sentence reads "that man's father is me".
• Draw a tree. Use a square for males and a circle for females, a horizontal line for marriage and a vertical line for children. Put the speaker at the bottom.
• Learn the coded-symbol method. Write each symbol's meaning at the top, then translate the expression one pair at a time as in Question 3.
• Watch for the unknown gender. Names do not always give the gender, so use only what the sentence states, such as "brother" or "mother".
• Remember siblings share parents. If Q is the brother of R and P is Q's mother, P is also R's mother.
• Convert to a standard relation last. Only after the tree is drawn should you attach the word "uncle", "nephew" or "grandmother".

Allow 45 to 60 seconds for a plain question and 90 seconds for a coded one. The related topic direction sense trains the same habit of drawing before answering.

The full blood relation topic test is on PrepMatic (about 15 questions, 30 minutes). The Reasoning Ability guide and the bank exam hub show where this topic sits in each exam.

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