There are 7 family members: P, Q, R, S, T, U and V going to a party. There are three generations in which only two are married couples. P is the grandfather of U who is a male. R is the son in law of S. V is the son of Q. S has only two children, both of the same gender. T is the sister in law of R.
How many males are there?
Family Tree Deduction
Determine the total number of males among the 7 family members using the provided relationship clues.
Identify Known Genders
- P is the grandfather of U (Male). Therefore, P is Male (M). U is Male (M).
- R is the son-in-law. Therefore, R is Male (M).
- V is the son of Q. Therefore, V is Male (M).
- S has two children of the same gender. R is S's son-in-law, meaning R married S's daughter. Thus, S's children must be Female (F). Let these daughters be D1 and D2.
- T is the sister-in-law of R. Since R is married to D1, T must be the sister of D1. Therefore, T is Female (F).
- Since D1 and T are daughters of S, S is Female (F).
Establish Family Structure
Current list of members and determined genders:
- Males: P, R, U, V (Count: 4)
- Females: S, T, D1 (Count: 3)
The 7 members are P, Q, R, S, T, U, V. V (Male) is the son of Q, implying Q is a parent in the second generation.
A structure satisfying all conditions (3 generations, 2 couples) is:
- Couple 1 (Generation 1): P (M) and S (F)
- Children (Generation 2): D1 (F) and T (F) (S's daughters)
- Couple 2 (Generation 2): R (M) married to D1 (F) (R is S's son-in-law)
- Child (Generation 3): U (M) (child of R and D1; P is grandfather)
- Final Placement: The remaining member is Q. Since V (M) is the son of Q, and Q must be a Gen 2 parent, Q must be T. So, Q = T. V is the son of T.
Calculate Total Males
The males identified in the family are:
- P
- R
- U
- V
Total count of males is 4.
Important Questions from Family Tree Problems
Saloni is the daughter of the only son of Kartik. Nirupama is the mother of Deepak. Yamini’s only son, Ankit, is married to Nirupama. Kartik is the paternal grandfather of Deepak. How is Kartik related to Ankit?
P, L, T, B, N and D are six members of a business family. N is the son of B, who is not the mother of N. L is the brother of B. D and B are a married couple. T is the daughter of D, who is the sister of P. How is N related to T?
Ramesh is the father of Manideep. Ramesh has only two children. Manideep is the brother of Niharika. Niharika is the daughter of Kavita. Ananya is the granddaughter of Kavita. Sujit is the father of Ananya. How is Sujit related to Manideep?
P is the brother of Q. S is the father of P. R is the brother of S. If T is the mother of R, then how is P related to T?
There are seven members, B, C, D, E, F, G and H, in a family. H is the only daughter-in- law of D. E is the sister of C. C is the only son of F, who is the wife of D. B and G are the sons of H. How is G related to F?
