Question: Let A = {1, 2, 3, 4, 5}, B = {w, x, y, z], A1 = {2, 3, 5} A, and g: A1

Let A = {1, 2, 3, 4, 5}, B = {w, x, y, z], A1 = {2, 3, 5} ⊂ A, and g: A1 → B. In how many ways can g be extended to a function f: A → B?

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