PROBLEM 1. (20 points, 10 points each) Given set expressions, indicate which area(s) should be shaded, if any, on given
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PROBLEM 1. (20 points, 10 points each) Given set expressions, indicate which area(s) should be shaded, if any, on given
PROBLEM 2. (20 points, 10 points each) Write down the power sets of the following sets and find cardinalities: a) B={{a} p(B)= What is the cardinality of set B? What is the cardinality of set 2(B)? b) C={{}} p(C)= { What is the cardinality of set C? What is the cardinality of set p(C)? (2 points) (2 points) (2 points) (2 points) }(6 points) _} (6 points)
PROBLEM 3. (20 points) Is this a power set of some set A? If so, find that set A. Explain your answer (possible or impossible; and if it is possible - how you "restored" set A and how to check whether it is correct). p(A) = }, {{a}, {ak}}, {{a}}, {{ab},{a}},{{ak}}} A= =