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OpenStudy (accidentalaichan):
When you find the union (U) of two sets, do you repeat numbers?
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OpenStudy (tkhunny):
No. Elements appearing more than one count only as one. If you are bleu and 3 ft tall, and we gather up all the 3 ft tall blue people, are there suddenly two of you? I think not.
OpenStudy (accidentalaichan):
Okay, Thanks. I was really confused on this.
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