Given: A = { 1, 2, 3, 4 } , B = { 1, 3, 5, 7 } , C = { 2, 4, 6 } . Find the following set. A *downwards curve* C.

Question

anonymous · Answer

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accessdenied · Answer

intersection?  so, the elements that are in both A and C

anonymous · Answer

What's the difference between an upwards curve and a downwards curve?

accessdenied · Answer

union (the upwards curve) is like both sets put together
intersection (downwards curve) is the set of elements that are shared by two sets

accessdenied · Answer

So like, 
A u C = {1, 2, 3, 4, 6}    (sets A and C together)
A n C = {2, 4}         (elements that are in both A and C)

rulnick · Answer

AccessDenied is correct.