Question: = ((A U A U 12. A sequence A, A2, A3,... of sets is defined recursively by A = {1} and An .. U

= ((A U A U 12. A sequence A, A2, A3,... of

= ((A U A U 12. A sequence A, A2, A3,... of sets is defined recursively by A = {1} and An .. U An-1) - An-1) U {n} for n 2. Determine the sets A2, A3, A4, A5 and A6.

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