Consider the following statements and answer the given question. If L - M => L…
2024
Consider the following statements and answer the given question.
If L - M => L is the husband of M,
L * M => L is the sister of M and
L + M => L is the son of M, then
How is W and Z related from the following statement: W + X - Y * Z?
- A.
cousin
- B.
sister
- C.
sister-in-law
- D.
nephew
Show answer & explanation
Correct answer: D
Concept: In coded blood-relation problems, each symbol stands for a specific family relation (for example, husband, sister, son). Decode the expression from left to right, building a small family tree that tracks each person's gender and generation, then read the required relation off that tree.
W + X means W is the son of X, so W is male and X is one of W's parents.
X - Y means X is the husband of Y, so X and Y are a married couple; since W is X's son, Y is W's mother.
Y * Z means Y is the sister of Z, so Z is a sibling of Y, that is, a sibling of W's mother.
A sibling of one's mother is one's maternal aunt or uncle; since W is male, W is the nephew of that sibling, Z.
Cross-check: W's gender is fixed as male by the son-link in the first step, which rules out any female-only relation term. Z sits one generation above W, as a sibling of W's mother, which rules out any same-generation term. Only one of the offered relation terms fits both a male subject and a one-generation-up sibling link.
Answer: nephew.