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= (2.1.1) List the members of the following sets: (a) {ER =1} (b) {x e Z+ | x 1} (b) {2} E {2, {2}} (c)

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= (2.1.1) List the members of the following sets: (a) {ER =1} (b) {x e Z+ | x 1} (b) {2} E {2, {2}} (c) {2} + {{2} , {2, {2}}} (d) {2} {{{2}}}

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