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![Coding Interview Tutorial 80 - Fibonacci Number [LeetCode]](/_next/image?url=https%3A%2F%2Fi.ytimg.com%2Fvi%2FmDDEf93kmtU%2Fhq720.jpg%3Fsqp%3D-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE%3D%26rs%3DAOn4CLCt1L76aKtTlT1Uoe9P7o8S5oZJYQ&w=256&q=75)