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OpenStudy (anonymous):
This symbol means every element is in both sets. {A⊆B}. True or False? and why?
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Directrix (directrix):
Review set theory symbols by clicking on the attachment. Then, decide true or false for your question.
OpenStudy (anonymous):
So it's false.
Directrix (directrix):
That's what I think. @jenniferneedshelp
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