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2014-03-16T20:54:09+07:00
A gabungan b = {1,2,3,4,5,6}
a irisan b = {1,3,5}
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2014-03-16T20:56:31+07:00
A gabungan B = {1,2,3,4,5,6}
A irisa B = {1,3,5}
A-B = {2,4,6}
B-A = Ф
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