Puzzle | Joint family of seven persons

In a joint family of seven persons:

L, M, N, O, P, Q, and R, two are married couples. R is a housewife, and her husband is a lawyer. N is the wife of M, L is an engineer and is the granddaughter of R, and O is the father-in-law of N, and father of P, a professor. P and M are siblings of the same gender. Q is L's brother and M’s son.

How is L related to O, and how many males are there in the family? 

Check if you were right - full answer with solution below.

Solution: 

• R: She is a housewife and married to a lawyer. She is also the grandmother of L.
• N: She is the wife of M.
• M: He is the husband of N, the son of O and R, and a sibling of P.
• L: She is an engineer, the granddaughter of R, and the daughter of N and M.
• O: He is the father-in-law of N and the father of P and M. He is also the grandfather of L and Q.
• P: He is a professor, the sibling of M, and the child of O.
• Q: He is L's brother and M's son.

The family tree is shown in the figure below:

• L is the granddaughter of O and O is the grandfather of L.
• There are four males and three females in the family. They are as follows:

1. R: Female (housewife)
2. N: Female (wife of M)
3. M: Male (husband of N)
4. L: Female (granddaughter of R)
5. O: Male (father-in-law of N)
6. P: Male (professor, sibling of M)
7. Q: Male (brother of L)