A + B means ‘A is the father of B’, A − B means ‘A is the wife of B’, A × B…
2020
A + B means ‘A is the father of B’, A − B means ‘A is the wife of B’, A × B means ‘A is brother of B’, A ÷ B means ‘A is the daughter of B’. If R − V × T ÷ W, then how is R related to W?
- A.
Son in law
- B.
Mother
- C.
Daughter in law
- D.
Mother in law
Attempted by 119 students.
Show answer & explanation
Correct answer: C
- Given relation string: R - V × T ÷ W
- Breakdown of relationships from left to right:
- R - V: 'R is the wife of V' (R is female, V is male, and they are a married couple: R(-) ⇔ V(+))
- V × T: 'V is brother of T' (V and T are siblings, sharing the same generation: V(+) — T)
- T ÷ W: 'T is the daughter of W' (T is female, and W is the parent of T: W is one generation above T)
- Generation and family tree tracking: Since V and T are siblings, W is the parent of both V and T. R is married to V, which means R is the wife of W's son.
- Therefore, R is the daughter-in-law of W.