PPT Slide

Summing the rows… gives us powers of 2

1

1 + 1

1 + 2 + 1

1 + 3 + 3 + 1

1 + 4 + 6 + 4 + 1

1 + 5 + 10 + 10 + 5 + 1

1 + 6 + 15 + 20 + 15 + 6 + 1

=1

=2

=4

=8

=16

=32

=64

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