In a family of seven members spanning three generations—P, Q, R, S, T, U, and V—there are … — State PSC Exam

In a family of seven members spanning three generations— $P, Q, R, S, T, U,$ and $V$ —there are two married couples. $P$ is the mother-in-law of $T$ . $R$ is the unmarried paternal uncle of $V$ . $Q$ is the father of $R$ . $U$ is the sister of $V$ , and $S$ is the husband of $T$ . Based on this information, how is $V$ related to $P$ ?

A
Grandson
B
Granddaughter
Cannot be determinedAnswer
D
Son

Answer

Cannot be determined

Tracing the generations reveals that

P

is the mother of

S

, and

S

is the father of

V

. This establishes

V

as the grandchild of

P

. However, because the text only states '

U

is the sister of

V

', we know

U

's gender (female), but

V

's gender remains unknown. Hence, whether

V

is a grandson or granddaughter cannot be definitively determined.

Step-by-Step Solution

Analyze the relationship between

S, T,

and

P

S

is the husband of

T

, making

T

female and

S

male. Since

P

is the mother-in-law of

T

P

is the mother of

S

Mother-in-law of a wife is her husband's mother.

Determine the lineage of

R, Q,

and

V

R

is the unmarried paternal uncle of

V

. Paternal uncle means father's brother. Therefore,

R

is the brother of

V

's father (

S

Q

is the father of

R

(and thus also the father of

S

, making

P

and

Q

the grandparent couple).

Paternal uncle shares the same father and mother as the child's father.

Identify the parentage and generation of

U

and

V

S

and

T

are the parents of

U

and

V

U

is the sister of

V

, placing

V

in the third generation as the child of

S

(and grandchild of

P

and

Q

Children of

S

are the grandchildren of

S

's mother,

P

Evaluate the gender of

V

to answer the question.

U

is female (sister of

V

), but no information defines whether

V

is male or female.

V

can be either a grandson or a granddaughter to

P

Gender cannot be assumed without explicit relationship statements.

Key Concept

Gender Ambiguity in Blood Relations

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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