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OpenStudy (anonymous):
If C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and D = {numbers divisible by 2 from 1 to 10}, what is C (upsidedown U) D?
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OpenStudy (anonymous):
It's the numbers that are in both: {2,4,6,8,10}
OpenStudy (anonymous):
\[C\cap D\] is the set of all elements that are in both sets.
OpenStudy (anonymous):
ok thanks! :D
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