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Blood Relation Test for bank exams shortcuts and tricks

How to Solve Blood Relation Question shortcut and tricks

How to solve blood relation test
Blood relation questions in bank po and clerk:In most of the bank exams you may find Blood relation questions.Sadly they are enough to cause headache for you.Here onwards no need to scratch your head while solving blood relation test.Here I am sharing few shortcuts for solving blood relation type questions.Before proceeding kindly read and understand following relations

  • Mother’s or father’s son = Brother
  • Mother’s or father’s daughter = Sister
  • Mother’s or father’s sister = Aunt
  • Mother’s or father’s brother = Uncle
  • Mother’s or father’s father = Grandfather
  • Mother’s or father’s mother = Grandmother
  • Son’s wife = Daughter-in-Law
  • Daughter’s husband = Son-in-Law
  • Husband’s or wife’s sister = Sister-in-Law
  • Husband’s or wife’s brother = Brother-in-Law
  • Brother’s or sister's son = Nephew
  • Brother’s or sister's daughter = Niece
  • Uncle or aunt’s son or daughter = Cousin
  • Sister’s husband = Brother-in-Law
  • Brother’s wife = Sister-in-Law
  • Grandson’s or Grand daughter’s daughter = Great grand daughter
  • Only son/daughter of your father/mother=you/yourself
  • Only son of grand father/grand mother=Father
  • Only daughter of grand father/grand mother=Mother
  • Son of only son/daughter=Grand son
  • Daughter of only son/daughter=Grand Daughter
Blood relation test can be classified into three categories 
  1. Introduction type
  2. Identification type and
  3. Coded blood relation

1.Blood relation questions Introduction type 

In this type of questions one person introduces another.

Eg1:Introducing Rajesh,Diya said "His brother's father, is the only son of my grand father".How is Diya related to Rajesh?
To solve this type of question break the sentence at "is" and resolve two sides separately and equate to get the final answer.
Resolving at "is" we get two halves , "His brother's father" and "the only son of my grand father"
Left half-His brother's father ->His father
Right-the only son of my grand father->Father(Diya's father).
His father=Diya's father.
So,answer is "Diya is the sister of Rajesh"

Eg2: Tom introduces Riya as the daughter of the only son of my father’s wife. How is Riya related to Tom?

Give question is same as  Tom introduces Riya."Riya is the daughter of the only son of my father’s wife".So while solving this kind of problems break the sentence at "as".

Left half-Riya.
Righthalf-daughter of the only son of my father’s wife.
Resolve the right half from right to left
my father’s wife->mother
the only son of mother->Tom himslef
Daughter of Tom->daughter
So answer is Riya is the daughter of Tom

2.Blood relation questions Identification type

Eg1:A has 3 children. B is the brother of C and C is the sister of D, E who is the wife of A is the mother of D. There is only one daughter of the husband of E. what is the relation between D and B?

These type of problems can be solved with the help of diagrams.Assign some symbols to relations and persons.
For example

=====   for married couples
--------   for siblings
             for parent and child relation
'M'         for male and 
'F'          for female

Draw the diagram using above symbols
boold relation reasoning shortcut
From the figure it is clear that D and B are brothers.

Eg2.There are 6 members in a family,P,Q.R,S,T and U.

  1. P and U are married couple.
  2. R is the grand son of S.
  3. T is the sister-in-law of U.
  4. S is the husband of mother-in-law of U.
  5. Q is the niece of T.
  6. P is the father of Q.


  1. What is the relation between U and Q?
  2. How many females are there in the family?
  3. Is R  the only grandchild of S?

Draw the diagram using symbols
boold relation reasoning shortcut

  1. U is the mother of R
  2. Three females are there in the family
  3. No,S has two grand children.Q and R

3.Coded blood relation questions for bank exams

In coded blood relation questions relations are represented by codes.For examples
   'A * B' means 'A is mother of B';
   'A  / B' means 'A is daughter of B'
   'A + B' means 'A is husband of B';
   'A − B' means 'A is sister of B'.

Eg:In P-Q+R*S how is P related to S?
You can solve this type of problems directly or by using diagram method

boold relation reasoning shortcut

Answer:S is the Aunt of S

Tips for solving blood relation questions
  • While drawing diagram depict the same generation members(siblings and cousins) horizontally and parent-child relation vertically.
  • If the relation is through father, then it is referred as"Paternal" and if it is through mother it is "Maternal".Eg(Father of father-Paternal grand father,Father of mother-Maternal grand father,Brother of father-Paternal uncle,Brother of mother-Maternal uncle ect..)
If you find the article on "Blood relation test" useful hit the like button and share it with your friends.If any doubt,please comment below.
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