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Manual Grading: Fibonacci function, file upload

The Fibonacci numbers are 1, 1, 2, 3, 5, 8, ..., where each number is the sum of the two before it. These are numbered $F_1, F_2, \ldots$, and \[ F_n = F_{n-1} + F_{n-2}. \]

Write a Python function fib that takes a number n and returns the nth Fibonacci number, $F_n$.

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Manual Grading: Fibonacci function, file upload

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2026-08-04 22:49:08 (CDT)
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dec frac
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