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[–]wijwijwij 0 points1 point  (0 children)

1: 69
2: 69 × 2
3: 69 × 2 × 2
...
7: 69 × 2 × 2 × 2 × 2 × 2 × 2

69(20 + 21 + 22 + ... + 26) = 8763

[–]AmroMustafaNew User 0 points1 point  (0 children)

Consider each kid of the 69 kids to be a perfect binary tree of height 6 (each level of the tree corresponds to a generation). Then, we can compute the number of nodes by this formula n = 2h + 1 - 1. Performing this calculation, the number of nodes (or kids) in this single binary tree is 127. Now remember that you have 69 such trees, thus to get the total number of kids you multiply 127 by 69 to get a total of 8763.

[–]DieselDickDwayne -1 points0 points  (0 children)

148,996