Question

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

Answer 1

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

Answer 2

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

Answer 3

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

Answer 4

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)

Answer 5

AccessDenied is correct.