Question

In a certain code language,

'A + B' means 'A is the daughter of B',

'A - B' means 'A is the brother of B',

'A × B' means 'A is the wife of B' and

'A + B' means ' A is the father of B'.

Based on the above, how is P related to T if 'P + Q ÷ R×S - T'?

• A. Brother's wife's sister
• B. Wife's sister
• C. Brother's wife's mother
• D. Wife's mother

Answer 1

Answer:

A. Brother's wife's sister

(Using the corrected meanings)

• + → daughter

• − → brother

• × → wife

• ÷ → father

Expression: P + Q ÷ R × S − T

Work right to left

1. S − T
   → S is the brother of T

2. R × S
   → R is the wife of S

3. Q ÷ R
   → Q is the father of R

4. P + Q
   → P is the daughter of Q

Now interpret:

• Q is father of R ⇒ R is Q’s daughter

• P is also daughter of Q ⇒ P and R are sisters

• R is wife of S ⇒ P is wife’s sister of S

• S is brother of T

So, relative to T:

P = brother’s wife’s sister