Directions: These questions are based on the following information: ‘P@Q’ means ‘Q is the mother of P’. ‘P$Q’ means ‘Q is the husband of P’. ‘P#Q’ means ‘Q is the sister of P’. ‘P&Q’ means ‘Q is the son of P’. If ‘A & B @ C & D # E’ then how is A related with E?

Correct — A.
Rule: the second letter is the relative of the first — 'P&Q' means Q is P's son.

A & B: B is the son of A
B @ C: C is the mother of B
C & D: D is the son of C
D # E: E is the sister of D

C is B's mother, so A, B's other parent, is B's father.
D is C's son and E is his sister, so E is C's daughter, B's sibling.
With A and C as the parents, A is E's father → option (a).

Why the others are wrong

• (b)
  Son — Son reverses the & sign. 'A & B' makes B the son of A, so A is a generation above B and E, not below.
• (c)
  Daughter — Daughter is E's relation to A, not A's relation to E. And A is male: B's parent other than B's mother, C.
• (d)
  Mother — Mother is C's role. 'B @ C' names C as B's mother, so A, B's other parent, is the father.

In a coded blood-relation chain, translate one symbol at a time, keep the direction of each definition, then join the links.

Mark genders as you go: & gives a son, # a sister, @ a mother. Here the chain runs A → B (son) → C (B's mother) → D (C's son) → E (D's sister).

Key facts

• In this stem every definition names the second person's relation to the first: 'P@Q' means Q is P's mother.
• When a child's two parents are named and one is the mother, the other is the father.
• A sister of C's son is C's daughter.

Common traps

• Reading 'P&Q' as 'P is the son of Q'. This stem defines it the other way round: Q is the son of P.
• Answering with E's relation to A (Daughter) instead of A's relation to E.

No directly related past PYQ was found.