You are doing a project in family history and exploring the family free. You have traced the generations before and have calculated family members according to different relation types, one of them being that of your grandparents. Exploring the family, you decided to explore the number of possible grandparents there could be. How many grandparents of the grandparents of your grandparents would you count (count maternal and paternal both)?
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You would have 4 grandparents. Each of your grandparents would have 4 grandparents. Each of these grandparents would have 4 grandparents.
Therefore, total number is 4 x 4 x 4 = 64
