How To Solve Blood Relations Problems – Tips And Tricks


Blood Relations problems are very tricky . First of all most of the candidates do not know the relations definition. So first of all remember the following relations :

The following relations are related to you :

                Condition     Relation     Gender
    Mother’s or Father’s Son     Brother     Male
    Mother’s or Father’s Daughter     Sister     Female
    Mother or Father’s Brother     Uncle     Male
    Mother or Father’s Sister     Aunt     Female
    Mother or Father’s Father     Grandfather     Male
    Mother or Father’s Mother     Grandmother     Female
    Son’s Wife     Daughter-in-Law     Female
    Daughter’s Husband     Son-in-Law     Male
    Husband or Wife’s Sister     Sister-in-Law     Female
    Husband or Wife’s Brother     Brother-in-Law     Male
    Brother’s or Sister’s Son     Nephew     Male
    Brother’s or Sister’s Daughter     Niece     Female
    Uncle or Aunt’s Son     Cousin     Male
    Uncle or Aunt’s Daughter     Cousin     Female
    Sister’s Husband     Brother-in-Law     Male
    Brother’s Wife     Sister-in-Law     Female


Note : A relation on mother’s side is called maternal and a relation on father’s side is called paternal.

Now quick method to solve blood relations problem :

Always solve using symbols for the relation , Note down the following symbols or you can make it of your own too

– – – => Brother or Sister (Use subscript f for sister and m for brother)

+ + + (use vertically as they are in upper level) => Father or Mother (Use subscript f for mother and m for father)

+ + + (use vertically as they are in lower level) => Son or Daughter (Use subscript f for daughter and m for son)

* * * => Husband or Wife (Use subscript f for wife and m for husband)

Let’s solve problems using this method.

Example 1 : If Neena says, “Anita’s father Raman is the only son of my father-in-law Mahipal”, then how is Bindu, who is the sister of Anita related to Mahipal ?

  1. Niece
  2. Daughter
  3. Wife
  4. Daughter-in-law
  5. None of These

Answer 1 : Since we know the genders  here and question is not based on the gender, so we just need to go with the diagram according to our solving tricks

Let’s draw the diagram based on it

problem 1 _blood_relationsAs you can see, Bindu is sister of Anita , who is daughter of Raman. Therefore Bindu is daughter of Raman too. Since Mahipal is father of Raman, Therefore Mahipal is Grandfather of Bindu.

Therefore, Bindu is Granddaughter of Mahipal , which is not present in the options. So the correct answer is 5. None of These.

Example 2 : Pointing towards a person in the photograph, Anjali said, ” He is the only son of the father of  my sister’s brother.” How is that person related to Anjali ?

  1. Cousin
  2. Brother
  3. Son
  4. Father
  5. Uncle

Answer 2 :  Let’s draw the diagram using our symbols …

problem 2 _ blood_relations


Therefore from the above picture , we can depict that the person is brother of Anjali  (Since he is the only son ). Thus the answer 2. Brother is right