Q2 Let C = {r : x e Z}. (a) Show that C'nQ+ 0. (le. show C contains a rational.) (b) Prove that CnR\Q#0. (le. show C contains an irrational.) (c) Prove C is countable. (d) Is R\ C countable or uncountable? Justify your answer.

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A: We can answer the question as below.

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A: 11+5x+2=33

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