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What is the cardinality of the set {ø, {ø}, {ø, {ø}}}?
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What is the cardinality of the set {ø, {ø}, {ø, {ø}}}?

User Vivien Chevallier
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1 Answer

5 votes

n(\{\emptyset, \{\emptyset\}, \{\emptyset, \{\emptyset\}\}\})=3
User Rcout
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