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Let $\Sigma$ denote the English alphabet. Let $f : \Sigma^{*} \times \Sigma^{*} \rightarrow \Sigma^{*}$ defined by $f(x, y)=$ $x y,$ the concatenation of $x$ and $y .$ Find $f(x, y)$ for each pair of words $x$ and $y .$combi, natorics
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We denote "combi" as $x$ and "natorics" as $y$. Show more…
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