Question

Consider the following statements and answer the question.
M, N, O and P are all different individuals. M is the daughter of N. N is the son of O. O is the father of P.
Which among the following statements is contradictory to above premises?

• A. P is the father of M.
• B. O has three children.
• C. M has one brother.
• D. M is the granddaughter of O.

Answer 1

The Correct Option is A

To solve the problem, we will analyze the given statements:

• M is the daughter of N: This indicates M is a female and N is her parent.
• N is the son of O: This shows N is a male and O is his parent.
• O is the father of P: Here, O is a male and P is his child.

Based on these, we derive the family relationships:

• O is the grandfather of M (since O is N's father and N is M's father), confirming that M is O's granddaughter.
• N, being O's son and having a daughter, implies N is M's father.
• O is N's and P's father, so P and N are siblings.

Evaluating each option:

1. P is the father of M.
   According to the premises, M is N's daughter and N is O's child, making M a direct descendant of N, not P. Hence, this statement is contradictory.
2. O has three children.
   The premises only mention N and P as O's children. There's no evidence to contradict this if a third child exists, so it aligns with the information.
3. M has one brother.
   Given N has only one known child (M), it’s possible M has a brother, but this doesn’t contradict the premises as other siblings aren't ruled out.
4. M is the granddaughter of O.
   This is consistent with the given data as M is N's child and N is O's child, meaning M is indeed O's granddaughter.

Conclusively, the statement that is contradictory to the premises is: P is the father of M.