??? What in the world is this
Use U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A= {1, 3, 5}, B= {5, 6, 8, 9} and C = {2, 4, 10}, find A upside down U thingy B?

Question

??? What in the world is this
Use U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A= {1, 3, 5}, B= {5, 6, 8, 9} and C = {2, 4, 10}, find A upside down U thingy B?

lukecrayonz · Answer

What do you even call this!?

parthkohli · Answer

$ \color{Black}{\Rightarrow A \cap B}$ means the intersection between A and B.
Intersection are the common elements in both the sets. Get it?

lukecrayonz · Answer

Oh.. Well now I just feel stupid, never even seen this before.

parthkohli · Answer

lol, so did you find the common elements?

lukecrayonz · Answer

5 haha

parthkohli · Answer

Yep, so you'd denote it by $A \cap B = \{5\}$

lukecrayonz · Answer

Have you ever had those nights where you literally forget everything you know about math..? Because this is that night for me.

parthkohli · Answer

lol exactly ;)

lukecrayonz · Answer

I'm serious, I am taking a test and i'm like uhhhhhh, forgetting how to factor etc. I took Precalc and got an A for godsake haha

parthkohli · Answer

Hahah