SOLUTION: what are the subsets of A={w,y)?

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Question 757528: what are the subsets of A={w,y)?
Answer by sachi(548) About Me  (Show Source):
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the subsets of A={w,y)are null set,{w},{y},{w,y}
four in all as there are 2 elements then the no of sub sets are 2^2=4 ok