P is the uncle of Q, who is the daughter of R and R is the daughter-in-law of S. How is P related to S?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Son
Each clue is read in turn, starting from the one that links the family to S.
R is the daughter-in-law of S — so R is the wife of a son of S.
Q is the daughter of R — so Q’s father is R’s husband, the son of S; Q is S’s granddaughter.
P is the uncle of Q — an uncle on the father’s side is the brother of Q’s father, so P is another son of S.
P is therefore the son of S. (If P were Q’s mother’s brother, he would not be related to S by blood at all, and none of the options would fit.)