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(Solved): Write out all functions \( f:\{1,2\} \rightarrow\{a, b, c, d\} \) (in two-line notation). How many ...
Write out all functions \( f:\{1,2\} \rightarrow\{a, b, c, d\} \) (in two-line notation). How many functions are there? How many are surjective? How many are injective? How many are bijective?
Expert Answer
Given - f : {1,2} ?{a,b,c,d}