P’s father Q is B’s paternal uncle, and A’s husband M is P’s paternal uncle. How is A related to B?

Introduction / Context:
Multiple “paternal uncle” links can look confusing, but they usually place several adults as siblings in one generation. Once you place Q and M correctly with respect to P and B, the relation of A (spouse of M) to B becomes clear.

Given Data / Assumptions:

• P’s father is Q.
• Q is B’s paternal uncle → Q is the brother of B’s father (so Q and B’s father are siblings).
• M is P’s paternal uncle → M is the brother of P’s father (i.e., brother of Q). Hence M, Q, and B’s father are all in the same sibling set.
• A is the wife of M (A’s husband is M).

Concept / Approach:
First, construct the sibling set: {B’s father, Q, M}. From “Q is B’s paternal uncle,” B’s father is one sibling; from “M is P’s paternal uncle,” M is another sibling alongside Q. Therefore, M is B’s paternal uncle as well (brother of B’s father). Since A is M’s wife, A is B’s paternal aunt by marriage.

Step-by-Step Solution:

Verification / Alternative check:
Could A be B’s mother? That would require A to be married to B’s father, but A is married to M (who is B’s father’s brother). “Cousin” does not fit a cross-generational in-law tie. No ambiguity remains.

Why Other Options Are Wrong:

• Cousin: Wrong generation and path.
• Mother: Would require A married to B’s father, not true.
• Data inadequate: The data fixes a unique configuration.

Common Pitfalls:

• Forgetting that multiple “paternal uncle” statements often imply a sibling trio.
• Mixing up “paternal aunt” (by marriage) with blood-aunt; both are “aunt” in these puzzles.

Final Answer:

Aunt