Blood Relations questions and answers

110 questions in 11 online tests, each with its answer and a worked solution.

Start Test 1

Blood Relations: key points

Blood-relation questions turn family statements into a small relationship tree.

  • Draw each generation on a separate line.
  • Mark gender only when the statement gives it.
  • Read the relationship from the asked person back to the reference person.

Blood relations: build the family tree before choosing an answer

Blood-relation questions ask you to identify how two people are related using a set of family clues. Track generations, use only stated genders, and read the final relationship in the direction the question asks.

A reliable four-step method

  1. Write the person named in the question as your reference point.
  2. Place parents one generation above, siblings on the same level, and children below. Join spouses with a separate line.
  3. Label gender only when words such as mother, son, sister or husband establish it. A person's name alone is not evidence.
  4. Trace from the reference person to the person being asked about. If several trees satisfy the clues, the relationship may not be uniquely determined.

Worked example 1: a parent’s sibling

Meera is the sister of Kiran. Kiran is the father of Dev. How is Meera related to Dev?

Answer: paternal aunt. Dev’s father is Kiran; Kiran’s sister is Meera. The clue explicitly identifies Meera as female.

Worked example 2: reverse the direction

Leela is the mother of Arun. Arun is the father of Tara. How is Tara related to Leela?

Answer: grandchild; gender cannot be determined. Tara is two generations below Leela. Neither the name nor being someone's child establishes whether Tara is a grandson or granddaughter.

Worked example 3: maternal and paternal sides

Ravi is the brother of Nila. Nila is the mother of Ishaan. How is Ravi related to Ishaan?

Answer: maternal uncle. Ravi is the brother of Ishaan’s mother. If the parent had been Ishaan’s father, the relationship would be paternal uncle.

Worked example 4: coded relations

In a code, A + B means A is the mother of B; A × B means A is the brother of B. What does P × Q + R establish about P and R?

Answer: P is R’s maternal uncle. Read each adjacent pair: P is Q’s brother, and Q is R’s mother. Treat the symbols as relationship labels, not arithmetic operators.

Worked example 5: insufficient information

Asha is a daughter of Mohan. Vikram is a son of Mohan. Must Asha and Vikram have the same mother?

Answer: no. The clues establish a shared father, but say nothing about their mothers. Do not silently assume every family is a single nuclear household.

Worked example 6: counting people

A family contains a grandfather, his only daughter and her only son. The daughter has no siblings and there are no other people present. How many people are present?

Answer: three. The daughter is also a mother, and the grandfather is also a father. Count individuals rather than adding relationship labels.

Common traps

  • Answering “uncle” when the question asks for the reverse relationship.
  • Assuming a spouse is a child's biological parent without a clue.
  • Assuming an “only son” is an only child: daughters may also exist.
  • Inferring gender from a name or assuming cousins must be male.

How to practise

Begin without a timer. Draw a tree for each item and explain why the other options fail. Then use timed practice and review whether mistakes came from generation, gender or relationship direction.

How to practise Blood Relations

Start with the key points, then take one Blood Relations test without rushing. Review every explanation, note the steps you missed and repeat the topic against the clock. APTITUDE TESTER has 110 questions in 11 tests for this topic.

  • Read the method before attempting a timed test.
  • Record mistakes by type: concept, calculation or time management.
  • Return to the hardest questions after a day and try them again.

Continue with another Reasoning topic when your accuracy is steady.

Blood Relations online tests

Sample Blood Relations questions

  1. Three generations. Arthur and Beth are married. Colin and Diana are their children. Colin and Farah are married. Ethan is their child.

    Arthur is male; Beth is female; Colin is male; Diana is female; Ethan is male; Farah is female. Every parent-child link stated here is biological. No person has any additional parent or spouse in this puzzle. Infer relationships only from these clues; the list of children need not be exhaustive.

    1. Using the three generations clues, how is Arthur related to Beth?
    1. Husband
    2. Father
    3. Grandfather
    4. Nephew

    Reference: q-ab4d134-527 · Report this question

    Show answer and solution

    Answer: A. Husband

    Start with Beth, the reference person. Arthur is Beth's husband. Therefore Arthur is Beth's husband. The question asks for Arthur's relationship to Beth, not the reverse. All genders and parent links needed for this answer are stated in the family clues.
  2. 2. Using the three generations clues, how is Arthur related to Colin?
    1. Brother
    2. Father
    3. Uncle
    4. Husband

    Reference: q-2fec3270-528 · Report this question

    Show answer and solution

    Answer: B. Father

    Start with Colin, the reference person. Arthur is Colin's father. Therefore Arthur is Colin's father. The question asks for Arthur's relationship to Colin, not the reverse. All genders and parent links needed for this answer are stated in the family clues.
  3. 3. Using the three generations clues, how is Arthur related to Ethan?
    1. Brother
    2. Nephew
    3. Grandfather
    4. Father-in-law

    Reference: q-8ec73a67-528 · Report this question

    Show answer and solution

    Answer: C. Grandfather

    Start with Ethan, the reference person. Colin is Ethan's father; Arthur is Colin's father. Therefore Arthur is Ethan's grandfather. The question asks for Arthur's relationship to Ethan, not the reverse. All genders and parent links needed for this answer are stated in the family clues.

See all the questions of Test 1

Blood Relations: questions people ask

How many Blood Relations questions are there?

There are 110 Blood Relations questions in 11 tests. Each test has its own page that lists the questions with their answers and solutions.

How long does a Blood Relations test take?

A test of 10 questions has a time limit of 15 minutes, which is 90 seconds a question.

Is there negative marking?

Rules vary by set. The rules screen shows the time limit, marks, any wrong-answer penalty and calculator permission before you begin. Feedback mode has no time limit or negative marking.

Can I practise Blood Relations without a time limit?

Yes. Choose practice mode: there is no clock, and the answer and solution appear as soon as you select an option.