Question

Difficulty: HardBlood Relations

In a family of six members—P,Q,R,S,T,P, Q, R, S, T, and UU—spanning three generations, SS is the brother of PP. PP is married to QQ, and TT is the daughter of QQ. RR is the only son of SS. UU is the child of RR. Based strictly on the given information, how is UU related to SS?

  1. A
    Grandson
  2. GrandchildAnswer
  3. C
    Granddaughter
  4. D
    Grandfather

Answer

Grandchild
The term 'Grandchild' correctly captures the two-generation downward relation from SS to UU via RR without making an unsourced assumption about UU's gender.

Step-by-Step Solution

1
Determine the relationship between SS and RR.
SS is the father of RR because RR is stated as the only son of SS.
Establishing the parent-child link between Generation 1 (SS) and Generation 2 (RR).
2
Determine the relationship between RR and UU.
RR is the parent of UU as UU is the child of RR.
Establishing the parent-child link between Generation 2 (RR) and Generation 3 (UU).
3
Trace the relationship from SS to UU and evaluate gender constraints.
Since SS is RR's father and RR is UU's parent, UU is the grandchild of SS. The problem specifies UU as 'child', leaving UU's gender undetermined.
Preventing invalid gender deduction from unstated attributes.

Key Concept

Blood Relations with Gender Ambiguity Constraints
Estimated Time:1m 30s
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