Question

P is the daughter of Q. R has only two children — P and S. T is the brother of U. S is married to V. R has only two daughters. W is the mother of Q. T is married to P. W is married to X. R is the son of Y. Who among the following is the father of Q?

• A. W
• B. Y
• C. R
• D. X

Hint:

When multiple relations are given, first anchor parent—child pairs, then deduce genders and spouses. The "mother & married to" pair directly yields the father.

Answer 1

The Correct Option is D

Step 1: Parentage of P.
"R has only two children — P and S" \(\Rightarrow\) R is a parent of P. 
"P is the daughter of Q" \(\Rightarrow\) Q is also a parent of P. 
Hence, \(\{R,\,Q\}\) are P's parents and therefore spouses of each other. 

Step 2: Genders of R and Q.
"R is the son of Y" \(\Rightarrow\) R is male. 
"R has only two daughters" and the two children are P and S \(\Rightarrow\) P and S are female. 
Since P is "the daughter of Q", Q must be female (mother of P and S). 

Step 3: Who is Q's father?
"W is the mother of Q" and "W is married to X". 
Therefore, the father of Q is \(\boxed{X}\). \[ \boxed{\text{Father of Q} = X} \]