Given: P & Q: P is the husband of Q P % Q: P is the daughter of Q P # Q: P is the father of Q P @ Q: P is the brother of Q What does R # S & T mean?

Correct — C.
Rule: decode one symbol at a time, left to right.

R # S → R is the father of S.
S & T → S is the husband of T.
So T is the wife of R's son S, and R is T's father-in-law → option (c).

Why the others are wrong

• (a)
  R is the father of T — Father of T stops at the first link. R is the father of S, and T is S's wife, so T joins R's family by marriage, not birth.
• (b)
  R is the brother of T — Brother needs the @ symbol, and the expression has none. R is the father of T's husband, a generation above her.
• (d)
  R is the husband of T — Husband of T is S, not R. The & sign links S to T, and R is linked only to S.

In a coded relation, each symbol joins the two letters on either side of it. R # S & T is two statements, R # S and S & T, sharing S.

Chain them through S: R's son is married to T. T is R's daughter-in-law, so R is her father-in-law.

Key facts

• R # S: R is the father of S.
• S & T: S is the husband of T, so S is male.
• The father of a woman's husband is her father-in-law.

Common traps

• Reading R # S & T as R # T and choosing father of T
• Missing that & makes S male, which is what turns S into R's son

No directly related past PYQ was found.