2 Cardinality Problem 5. Is it true that: . |{1,2,3} = {2,3,4}|? \{1, 2}= {1,2,3}|2 |{11} = {{1,1}|? l = l{@}? |{1, 2} = {{{1,2}}| \{8}} = \{8, {}}}? \{1, 2, 3}} = \{8,{8},{{8}}}? N R? (Hint: see lecIntro, pdf)