A Staircase Permutation Problem
Question: “Liam’s house has a staircase with 12 steps. He can go down the steps one at a time or two at a time. For example, he could go down 1 step, then 2 steps, then 2, 2, 1, 1, 1, 1, 1. In how many different ways can Liam go down the 12...
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