Question: Let 2 be an arbitrary set. (a) Is the collection F consisting of all finite subsets of N an algebra? (b) Let F2 consist

Let 2 be an arbitrary set. (a) Is the collection F consisting

Let 2 be an arbitrary set. (a) Is the collection F consisting of all finite subsets of N an algebra? (b) Let F2 consist of all finite subsets of 2, and all subsets of 2 having a finite complement. Is F2 an algebra? (c) Is F2 a o-algebra? (d) Let F3 consist of all countable subsets of 2, and all subsets of N having a countable complement. Is F3 a o-algebra?

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