# Sum of the First 10 Terms of a Generalized Fibonacci Sequence

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This Demonstration asks you to calculate the sum of the first 10 terms of a generalized Fibonacci sequence: , , , , , ….

Contributed by: Izidor Hafner (August 2019)

Open content licensed under CC BY-NC-SA

## Details

The trick is that the sum is 11 times the seventh term of the sequence. It is easy to multiply by 11.

Reference

[1] *Sum of Fibonacci Numbers Trick* [Video]. (Jul 31, 2019) www.youtube.com/watch?v=CWhcUea5GNc.

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