Create a vector of three elements $(2,4,6)\text{'}$ and name that vector vec.a$`.$ Create a second vector, vec.b$\text{'},$ that contains $"(8,10,12).$

a$.$ Add these two vectors together and name the result 'vec.c$\text{'}.$

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cdots$\{r\}$

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trial.vec :$20$

trial.vec

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Generate the vector of even numbers $\{2,4,6,$dots,$20\}.$

a$.$ Using the 'seq$()$ function and