You have two biological parents. Each of these parents has two biological parents of their own (your grandparents). Each grandparent has two parents of their own, and so on. This set of relationships can be illustrated by a family tree, as shown in the illustration. (M stands for mother, F stands for father, and G stands for "great" or "grand." That is, GGF is a great-grandfather.)
http://media.apexlearning.com/Images/200511/08/4ab7a8d2-4395-4a32-b70d-962099a6f59f.jpg

Question

You have two biological parents. Each of these parents has two biological parents of their own (your grandparents). Each grandparent has two parents of their own, and so on. This set of relationships can be illustrated by a family tree, as shown in the illustration. (M stands for mother, F stands for father, and G stands for "great" or "grand." That is, GGF is a great-grandfather.)
http://media.apexlearning.com/Images/200511/08/4ab7a8d2-4395-4a32-b70d-962099a6f59f.jpg

anonymous · Answer

The diagram shows that you have 16 great-great-grandparents in the fifth generation back. How many great-great-great-great-great-grandparents do you have? (That's all your grandparents in the eighth generation back, starting with you as the first.)

 		A.	512
 		B.	256
 		C.	64
 		D.	128