Understanding the Blood Relation Puzzle

This question asks us to figure out the relationship between the boy in an old photo and Kiran's son, based on the statement Kiran makes to his son.

Breaking Down the Statement

Kiran's statement to his son is key. Let's analyze it piece by piece from the perspective of Kiran's son:

• "Your mother": This refers to Kiran's wife.
• "Your mother's brother": This is Kiran's wife's brother, who is Kiran's brother-in-law.
• "Your mother's brother's father": This is the father of Kiran's wife's brother. This person is Kiran's wife's father, who is Kiran's father-in-law.
• "Your mother's brother's father's brother": This is the brother of Kiran's father-in-law. This person is Kiran's wife's paternal uncle.

So, the statement tells us that Kiran's wife's paternal uncle has two children.

Identifying the Boy's Relationship

The statement continues:

• "One of them is married to a girl called Sita": This means one of the two children (who are Kiran's wife's cousins) is married to Sita.
• "the boy in this photo is her son": This means the boy in the photo is Sita's son. Since Sita is married to one of Kiran's wife's cousins, the boy is the son of Kiran's wife's cousin.

Relating the Boy to Kiran's Son

Now let's connect the boy to Kiran's son:

• Kiran's son's mother is Kiran's wife.
• The boy's parent is Kiran's wife's cousin.

In standard genealogical terms, the children of cousins are called first cousins once removed. However, the options provided do not include "First cousin once removed".

Let's look at the options:

1. Son
2. Father
3. Father-in-law
4. Cousin

The boy is clearly not Kiran's son's son, father, or father-in-law. The relationship is within the broader family, linked through Kiran's wife and her side of the family.

Given the common usage in such puzzles and the available options, "Cousin" is the term that best describes a relationship within the extended family, even if not precisely a first cousin. The parents of Kiran's son (Kiran's wife) and the parents of the boy (Kiran's wife's cousin) are related as cousins, making their children related in a 'cousin' category, albeit a 'once removed' degree.

Therefore, considering the options, the most appropriate answer is Cousin.

Relationship Summary

• Kiran's son's mother = Kiran's wife
• Kiran's wife's paternal uncle's child = Kiran's wife's cousin
• The boy in the photo = Son of Kiran's wife's cousin
• Relationship between Kiran's son and the boy = Child of Kiran's wife vs. Child of Kiran's wife's cousin

This relationship is best described as 'Cousin' based on the provided options.

The final answer is Cousin.

Revision Table: Key Relationships

Additional Information on Blood Relations

Understanding common blood relation terms is helpful for solving these puzzles:

• Sibling: Brother or sister.
• Parent: Mother or father.
• Child: Son or daughter.
• Uncle/Aunt: Sibling of a parent.
• Nephew/Niece: Child of a sibling.
• Cousin (First Cousin): Child of a parent's sibling (child of an uncle or aunt).
• Grandparent: Parent of a parent.
• Grandchild: Child of a child.
• Great-grandparent: Grandparent of a parent.
• Grand Uncle/Aunt: Sibling of a grandparent.
• First Cousin Once Removed: The child of your first cousin, or the first cousin of your parent. This is the precise technical relationship identified in the puzzle between Kiran's son and the boy.

Blood relation puzzles often test careful reading and step-by-step deduction to build a family tree or chain of relationships. While precise terms exist, multiple-choice options may sometimes use broader categories.