Consider the relationships among P, Q, R, S, and T:
• P is the brother of Q.
• S is the daughter of Q.
• T is the sister of S.
• R is the mother of Q.
The following statements are made based on the relationships given above.
(1) R is the grandmother of S.
(2) P is the uncle of S and T.
(3) R has only one son.
(4) Q has only one daughter.
Which one of the following options is correct?
A.
Both (1) and (2) are true.
B.
Both (1) and (3) are true.
C.
Only (3) is true.
D.
Only (4) is true
Solution:
R−
|
P+ ≡ Q
|
S− ≡ T−
Hence,
R is the grandmother of S
P is the uncle of S and T