Question 3
A family tree is a diagram that shows relationships among family members.

In the diagram above with two females (F1 and F2) and three males (M1, M2, and M3), we can see there are at least one grandfather and one father in law (M1), one grandmother and one mother in law (F1), two fathers (M1 and M2), two mothers (F1 and F2), two sons (M2, M3), one daughter in law (F2), and one grandson (M3).
Make a family tree with the least number of family members that contains at least:
- one grandfather
- one grandmother
- one father in law
- one mother in law
- two fathers
- two mothers
- two sons
- two daughters
- three grand children
- one daughter in law
- two sisters
- one brother

In the diagram above with two females (F1 and F2) and three males (M1, M2, and M3), we can see there are at least one grandfather and one father in law (M1), one grandmother and one mother in law (F1), two fathers (M1 and M2), two mothers (F1 and F2), two sons (M2, M3), one daughter in law (F2), and one grandson (M3).
Make a family tree with the least number of family members that contains at least:
- one grandfather
- one grandmother
- one father in law
- one mother in law
- two fathers
- two mothers
- two sons
- two daughters
- three grand children
- one daughter in law
- two sisters
- one brother