Solution: Last Digit of the Sum of Fibonacci Numbers

Look at the solutions for the Last Digit of the Sum of Fibonacci Numbers Problem.

Solution 1: Pisano period

The table below shows the first 11 Fibonacci numbers and the first 11 numbers Sn=F0+F1++FnS_n = F_0 +F_1 +\cdot \cdot \cdot+F_n.

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