Sum of the First 10 Terms of a Generalized Fibonacci Sequence
This Demonstration asks you to calculate the sum of the first 10 terms of a generalized Fibonacci sequence: , , , , , ….
The trick is that the sum is 11 times the seventh term of the sequence. It is easy to multiply by 11.
 Sum of Fibonacci Numbers Trick [Video]. (Jul 31, 2019) www.youtube.com/watch?v=CWhcUea5GNc.