Reasoning & Mental Ability : Blood relations

BLOOD RELATION: Problems on Blood Relation involve analysis of certain blood relations. In these types of problem, you should give proper attention to find out the correct relation.

Some of the blood relations which is generally used in the question are given below in the tabular form:

Mother’s or father’s son	Brother
Mother’s or father’s daughter	Sister
Father’s brother	Uncle
Father’s sister	Aunt
Father’s Father	Grandfather
Father’s mother	Grandmother
Mother’s brother	Maternal Uncle
Mother’s Sister	Maternal Aunt
Son’s wife	Daughter in law
Daughter’s Husband	Son-in-law
Husband’s or wife’s brother	Brother-in-law
Husband’s or wife’s sister	Sister-in-law
Brother’s son	Nephew
Brother’s daughter	Niece
Sister’s husband	Brother in law
Brother’s wife	Sister in law Great Grand Daughter
Grandson’s daughter	Great Grand Daughter
Granddaughter’s daughter	Great Grand Daughter
Mother’s father	Maternal Grand Father
Mother’s Mother	Maternal Grand Mother

Note:

If in a question if is not mention about paternal or maternal. By default, we consider the paternal type.
We cannot determine the gender of a person by name.
Male are represented by (square) or + (plus) sign and female are represented by (cycle) or 0 (minus) sign.

GENERATION TREE:

Example 1.

Pointing to a lady in the photograph, Shalu said, “Her son’s father is the son–in–law of my mother.” How is Shalu related to the lady?

Solution: Lady’s son’s father is the lady’s husband. So, the lady’s husband is the son–in–law of Shalu mother, i.e. the lady is the daughter of Shalu mother. Thus, Shalu is the lady’s sister.

Example 2.

A is the father of C and D is the son B. E is the brother of A. If C sister of D, how is B related to E?

Solution: For these types of question, we can use a generation tree.

So, B is a sister in the law of E.

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